Pathetic service

Afternoon Can you kindly assist me report a pathetic service I'm receiving from 3gmobileservices. I've last sent my device for repair on the 27th of January 2021. They have claimed that my phone is a physical damage so I need to pay R759 for them to fix it. I did as told(made a payment to a given account no.) but now they are busy making excuses. What worse is that they don't even answer their phone. Please help me report this