Still waiting for my refund after incorrect billin

Hello.<br> In February 2015, I took my Blackberry 8520 to MTN Menlyn Shopping Centre for repair. It was booked in, two weeks later I called the store to check on the progress and I told and sent this sms<br> <br> \Please note that your is still at the repair centre waiting for a service fee of R330 for beyond economical repair."<br> <br> I paid the fee the next day as I wanted my phone back because the phone was only malfunctioning not what they said. Went to the store to collect the phone but was told the phone I paid for didn't belong to me and my phone was still at the repair centre and would be fixed with no cost to me. Since that day I am still waiting for my refund. was told all sort of excuses"