MTN's stupid process

Before I write the rest of this review let me say the staff member that helped us was a good sales consultant at Rustenburg mall the problem lies with MTN themselves. I upgraded my account and took the premium Huawei device the "P50 Pro" after a week and half of using the device I noticed that the phone does not want to charge. Now if I hand in the device at the store I have to wait upto 3weeks before I get feedback still paying my account for those 3weeks. I use my phone for work so will also be losing money on that front. Not happy about the service after the contract expires I'm cancelling my account