Sony Experia Aqua M2

I purchased a phone from Vodacom in November, the phone was out of stock and was delivered on 12 December 2014. I took the phone in to the Vodacom shop in Secunda due to the fact that a person phoning from another phone could not hear me. The phone was sent for repairs after the festive season via the Alberton Vodacom Repair shop (***) it came back with the same problem, the job card indicated that a part was replaced. Three weeks later the phone was returned and could not be used for anything other than social network, same problem : the phone was once again sent for repairs and this time the software was reloaded, it came back with the same problem. the phone was taken back with the same problem on 20 March after I called the repair call centre a lady called Augustina confirmed that she has requested on the system that the phone be replaced as it was giving problems since receipt. There was no communication after the 3rd time to let me know if the phone will be replaced or not and apparently a board was now replaced. UNACCEPTABLE