THIS IS MY LAST FORD

I have at 2 or 3 occasions reported to Ford that my car seat is collapsing. I went twice to the Ford Hatfield branch to have it fixed and nothing happened every time they told me the part was not there. Now I took the Ecosport for a service which they say is 3 months late and my guarantee is nul and void and I have to pay R8 000 for repairs to the back door that I understand a number of other people are complaining about also happened to them. How is it that Ford keep on getting away with sloppy work? I also received a letter just after I bought the car that the airbags had to be checked. Now the back door not working... How is it that when their is a factory/manufacturing issue I have to pay it out of my pocket... This is a manufacturing problem....