Useless PG Glass service

I submitted a insurance claim on my windscreen 3 weeks ago with my insurance company. The insurance company responded the same day, within hours, and dealt with my problem quickly. PG Glass phoned me on the same day, took all my information and then never got back to me to replace my windscreen. I had to phone on a daily basis, where I was told that they will phone me and get back to me. Which they never did. At the end I eventually got a date for the replacement of my windscreen this morning. I asked the person who phoned me twice, on different occasions that they must please help me early in the morning, where I was told that they will phone me to arrange. They never phoned me, I followed up this morning, without feedback. My windscreen has to be replaced today, I was told it will be 08:00, and then 10:00 and now it is 12:00, no response, With all the phone calls and poor communication from PG Glass, by diary and business was influenced negatively. At the end of the day PG Glass will probably just not to my installation, and still require their payment, after not rendering any service. And then blame the client. I propose that insurance companies stop using PG Glass in totality and see how useless they are.