Won't use them if it was my choice but Insurance forces me to use them

Second unfortunate experience with PG Glass - this time to replace windscreen on vehicle using PG Glass Mobile Unit - time for replacement changed 3 times - every time PG Glass said they were not aware of previous arrangements. I had to change my meetings to accommodate PG Glass as time kept changing. While I was advised that there is an excess payment PG Glass never informed me that I had to pay there Mobile Unit - this creates a security risk. I was promised that a management from PG Glass Call Centre will call me - I am still waiting and I am not holding my breath