Poor quality service and product

I’ve recently sent my Major Tech multimeter for repairs and calibration due to low AC voltage readings when compared to my Fluke multimeter. The meter was supposedly repaired and calibrated. With the first usage of the meter within two days of its return I experienced the same problem.The meter was returned to Major Tech only to be told that this time it cannot be repaired and that this was damaged by myself however my Fluke meter still works fine having done the same measurement. I had requested a refund of the R1500 paid which was refused.