Bizzare/Bad service

on the 18th I phoned PG Glass to have a chip on my windscreen stopped. I told the consultant that I am near pta north - I told him either wonderboom or brits will be fine. he said I can go to wonderboom its just a walk in I don't have to make an appointment and gave ref # ********** . when I got there the was electricity but when the lady @ the reception tried to assist the electricity went off ( load shedding) and she said they cannot assist and not sure when is the power coming back. I left bcoz I was rushing somewher though surprise that they do call out why can't they assist . on the19/03 I rec a call from PG glag told them I was not assisted due to load shedding told Lerato that I will try to go on Saturday since they are not working on holidays 21/03. on Saturday the 23/03 I was also not assisted because the lady told me they don't have the technician to assist. what a bad customer service I had to drive 2 times without help.