Since new it’s always had condensation in big droplets on the back wall and it pools at the bottom or freezes into a sheet of ice and locks the drawer in. It’s set to 4’ and I think it’s always been blocked since new, but due to covid etc it’s out of warranty. Wondering if there’s anything I can do to fix it, pay for an engineer or just get a new one. We had to get another under counter fridge as this makes stuff like salad go off in a day. Tried unblocking the hole at the back once with hot water, doesn’t see, to do anything