WORST SERVICE EVER ON GLAZING AT MBOMBELA AUTOCARE NELSPRUIT

I have taken my car for glazing have been complaining got a 5 year guarantee. When I did this I was told that it is a once of fee Suddenly I get a phone call that my car needs to go in every 6 months but payment need to be made of more or less R900 I complaint about a few things lady by the name of Marike were going to get back to me. I keep on sending whats app's messages get read but no response