Bad Service and other damages

I was told that on the week of 5 Oct 2015 they will order parts and I must bring the car on the 12 Oct 2015, that didn't happen. It ended up being the 19 Oct 2015. Communication was a problem in this instance, Although they apologized and blamed that parts were a problem to get. All of a sudden my car was ready for collection. to my surprise one of the items was repaired instead of replaced. I do not know whether they felt that I am too nagging so they must just get rid of it. All I wanted to know is how long will they have my car for so that I hire a car for that period. They phoned me late on Friday the 30th Oct 2015 saying car is ready because I called them that morning asking whether should I extend the car rental or not , I extended. I got my car on the 2 Nov 2015. On the 4 Nov I took it back as I noticed that the park and the sports lights are not working they fixed that. on the 6 Nov and 8 Nov the window got stuck for few seconds and it went up again. Yesterday the 12 Nov it got stuck for few Minutes, then I took it back. now they refuse to take responsibility. they promised to call the assessor and then call me, That did not happen as usual. please intervene.<br> <br> Thank you