Hello everyone, hope all is well!
A quick update on the situation......
So because there was no air in my car they couldn't diagnose the problem but because I was already there I asked them to fit a second-hand air-con compressor anyways even though they were not 100% that could be the problem (£90 for compressor and £90 for labour) I read online that job is a real ball ache! anyways after all that was done he had his mate fill it with gas and rang me and said there are faults coming up on the ECM maybe with a wire so sorry the air con doesn't work......but for some reason, my air-con has been working fine and it's freezing cold. haha
but I'm going to sell my Range Rover because I cannot deal with these problems anymore even though its a lovely drive and I love Vogues but I just don't have the hands-on experience like you guys.
I don't get how these cars are made for off-road when they cannot even handle normal car journeys. haha
Thanks again everyone on this thread!