Vodacom where is my promised credit note??

We bought a brand new Sony Experia from Cellucity in<br> N1 City at the end of October 2015. Our son had some few weeks' intermittent<br> use of it, as it became faulty almost immediately. We took the<br> phone in to the Vodacom Repairs shop in Century City in January 2016.<br> <br> It has been taken in by Vodacom Repairs Centre ** SIX ** times.<br> The last three times a replacement/credit was requested by me to no avail. I had to visit the HO of Vodacom in Century City on 4 March and post on Hello Peter to get some response. <br> STILL NO CREDIT NOTE!!!<br> <br> We have not had use of the phone in 4 months and the contract is still being paid. I request that this is credited to the contract account too.<br> <br> I have lodged an official complaint with the Consumer Protector ref. no 275721. <br> <br> Louise Benson