Shocking windscreen replacement

My insurance company, King Price asked PG Glass to come and replace my windscreen. On 12th August, I had an appointment for the installer to replace my windscreen at 14 30. He only arrived at 15 35. FULL OF ATTITUDE AND NO APOLOGY. I told him to carry on, and he refused until he got paid first. Probably a company rule, but full of attitude. I paid him, he proceeded to do the work. he left at 16 35. A few days later the rubber on top of the windscreen came off. On 18th August, I contacted PG Glass, was given a reference number and was told a team will be assigned to assist me. I have since contacted PG Glass 4 more times and keep getting the same response. I am not sure if and when this matter will be resolved. In the meantime my license discs keep falling off my windscreen, which I will sort out. What shocking service