Hi
A few years ago I got a VW SV in SE trim with “comfort seats” within several days I found just sitting in the driver’s seat very uncomfortable. My previous car had been a Seat Altea XL in SE trim and the seats were never any problem. I took the car back to VW and informed them of the problem, two days later I watched a mechanic remove the seat and fit a new foam seat base. The result was the seat was now comfortable. In my case the foam base was faulty.