Booking online - human error will not be tolerated

I am happy to take your word for it peedee and what you say is reflected in the clause.  However, it also clearly says You may amend your personal and booking details online which strongly suggest that once you have completed your booking you can still make changes online.  

For me it's difficult to be certain as I have never attempted to make a booking and probably never will, and obviously never had cause to try to make an amendment.  Additionally, the way the terms have been written is some of the worst legal drafting I have ever read, and that is being very kind.  

A bit harsh IMO. Anyone new to the booking system can easily make a mistake. It speaks volumes when the club advice is not to make multiple bookings. I don't think they ever expected people to ammend multiple bookings. 

If I could have used the website to amend my booking, I wouldn’t have been penalised. It used to be so easy.😩

Not at all. The only mistake is the OP's in choosing the wrong date. This has nothing to do with the booking system, the system cannot know if your dates that you input are really the ones you want. It can only work with what is given. PD is fully justified.

Always double (in my case triple and get someone else to) check the dates.

Also where is the club advising not to make multiple booking? Apologies if I'm wrong but I have missed that.

However, it also clearly says You may amend your personal and booking details online which strongly suggest that once you have completed your booking you can still make changes online.

Logicaly, I think it only applies to dates if you do so more than 21 days before arrival. Whether you can change other details like party details I have no idea.

peedee

Also where is the club advising not to make multiple booking? Apologies if I'm wrong but I have missed that

It has been mentioned numerous times on here and I have personally been advised by call center staff on different occasions and for different reasons not to use multiple site bookings as it leads to "problems " amending and cancelling individual bookings. 

Possibly, but a set of terms should be crystal clear there should be no room for assumption such as "I think it only applies to dates if you do so more than 21 days before arrival".  The reader should never be placed in that position.  As I have said the drafting is really bad.   

The terms are made quite clear in an email that you usually get within minutes of having made your payment. It details your booking and states the following:

• If you decide to cancel or amend any nights of your stay, or remove guests from your stay within 21 full days before your arrival date a cancellation charge will be applied. The charge will be the loss of some or all of the original deposit you paid, for example:
o If you cancel your whole stay, you’ll lose the whole deposit paid for that stay
o If you cancel some of the nights of a stay, you’ll lose the deposit amount for each of the nights cancelled (the deposit value for each night is prorated using the value that each cancelled night represents of the total price of that stay. For example, if you cancel the first night of a three night stay and the first night represents 40% of the total price of the stay, then you will lose 40% of the deposit paid and retain the remaining 60%). The charge for removing guests within 21 days of arrival is calculated the same way.
o If you move or ‘shift’ your dates (cancel some nights and add additional nights), you will lose the deposit for each night cancelled from your original stay, and you may be required to pay a new deposit for each new night added

Prior to the 21 days you can change what you like to your booking.

Attached to the email you also get a three page letter with details of your booking and yet again another reminder of the amendment/cancellations conditions and the requirement to check "Before you Go" etc,

I personally don't think the Club could do much more to make it clearer.

peedee

Well it may have been mentioned numerous times by us posters in here but nothing official posted by the club as you suggested? Also the person you spoke to may not have official backing I would think, just their view or advice nothing official.

But really no matter how sophisticated and easy to use a booking system it can never cope with someone not checking their dates 

It's supposed to be a members club and it achieves nothing other than a few extra pounds in the "not for profit" club accounts to penalise a member in this way for a one off error, it only succeeds in sowing the seeds of discontent. If the situation had been dealt with in a more sympathetic manner just imagine the good will this would have generated. I'm sure the OP would have had great pleasure in relaying what could have been a more amicable response instead of which there will no doubt be tales of anger and dissapontment to be passed on.