Miscommunication and shoddy work at PG

I was told to use PG Glass by my insurer to replace my windscreen. There was miscommunication resulting in wasted time, I was told to be at Fourways branch and the technician was at the Woodmead Branch. When the repair was eventually completed I specifically asked the technician if the windscreen wipers needed checking. He assured me that 'there is nothing wrong with the windscreen wipers'. Sadly, when it rained last week, it became evident that the windscreen wipers were NOT okay and were hitting the side of my windscreen border on every stroke. I contacted Isaai who said 'I can come in on Friday' - I went in on Friday, when I was on leave, only to be told that I was meant to be at the Fourways branch. I would not recommend PG as they are not good at communicating. I would like to request that the mistake is remedied now at my convenience and that a Technician comes to my place of work and sorts the problem out.