Sagging Seat Cushions on 2022 Swift Challenger 480

We took delivery of our new 2022 Swift Challenger 480 in May last year. The 'van had a lot of use during the summer months during which time we found the seat cushions very quickly started sagging where we sat near the front of the 'van, to the extent they became uncomfortable.

We spoke to the dealer about this problem and they said they would take it up with Swift. After several weeks wait, Swift then asked for photos of the seats. These were provided but I did point out that photos did not and could not show the problem. Anyway, we were asked last week to take the cushions into the dealer as Springvale had agreed to inspect them and repair if necessary. We took them in yesterday and the young lady at the dealer said it was not an uncommon problem and that as Springvale had asked to inspect the cushions it usually meant they would repair them.

Anyone else had similar problems with their more recent Swift seat cushions and, if so, what was the outcome?

Many thanks.