Bad service

I bought a Kia picanto at imperial select Borksburg in March 2019, the rims had issues and the car stayed at the garage for a month ,while they borrowed me their car. I had previously asked them to replace my right rubber door and 4 months later they are unable to assist . I have called and went to them several times but all they tell me is we will call you in 2days ...4months later nothing has happened .They are really frustrating me and draining me financially. The person responsible for this mess is Michael.