The worst place ever,!!!

Just after the lockdown my insurance reffered me to Mag to repair my car on a minor accident I had, my car was booked in after a whole month I was told my car is ready, upon collecting the car all looked alright but just as arrived home and inspected the in the light I discovered that my car was not painted properly, car was dirty with paint dust inside but was given to them spot less, had to take the car back, than when collecting again realized the car was only polished where the car was worked on but was told when initially dropping the car off the whole car will be polished, because the car was dented on the right I only inspected the car on the damaged side, a few weeks went past and I discovered that the car had paint runs on the left, when I inquired about it I was told it couldn't have been them as the never worked on the right, (runs on the petrol flap and above the flap) so my car was never worked on before and bought it as a demo,now the paint is starting to crack on the rear bumper is starting to crack, took the car back was told paint does not crack horizontally a only vertically, their paint technicians claims I must have bumped or someone has bumped me in order for the paint to crack, which did not happen 7so with thier "life time" warranty on paint work they refuse to fix these cracks that have now developed on my bumper. I read the bad reviews before I took my car to them, but because they were close to where I live I thought I would give them a chance I now highly regret, I will never recommend this place to anyone!!!!!