Cellphone returned with fault after repair

I bought a phone in April and a fault with the charging port appeared around August. The device was sent in for repairs but came back with a different fault. The microphone was damaged during the repair process. I now have to send the phone in for repairs again (which is not a short process). At this point I want a refund in order to purchase another device (from Mr Price) but I'm told a refund is only a possibility after the second or third repair. I feel like this is unacceptable as the time without the device will almost be 2 months and this is after the device was damaged by the repair centre, not the user. I understand the policies with cellphones are different but if the phone comes back from repairs with a different issue I feel that a refund is in order. The staff at Table Bay Mall were lovely and tried to help as much as possible, very friendly and great service from them.