Advert says 1 thing. Your service says another

My 1st trip was to PG Eastgate 24/06 where I was told nobody could do the job as the guys who do it where on lunch, 2nd trip was Edenvale PG branch 25/06 where I was told to get authorisation from my insurance company and 3rd trip was East Rand Boksburg where nobody could do the job as it was a Saturday. I was enquiring about having my 2 x chips filled on my Subaru's windscreen. I went into the East Rand Boksburg branch on the Saturday morning with my authorisation and was turned away! Was wondering why your company even stays open due to making 3 trips to different PG Glass branches all in the East Rand. I complained the the lady at East Rand and all she could do was apologise. So I am annoyed that I have made 3 trips to 3 different PG Glass branches and still have chips that need to be filled. I wanting to know if I need to book my car in as I have been told it is a very quick process? I only had a 45 min lunch break and work in Edenvale. Or are you guys not interested in business? But your adverts say differently!