Checkers not interested to resolve customer queries on invoice errors

I bought several items to the value of R2 675 yesterday from Checkers in Menlyn Mall Pretoria. When I checked the invoice once I was back home, I had some queries on the invoice, definitely one error.

I tried to contact the store today three times, left my number for the store manager to call me back, etc. I cannot seem to get my queries resolved with the store.