Vodacom Bad Service

I’m greatly disappointed in the recent service received by Vodacom Mobilities,Sunridge Park,Port Elizabeth and Vodacom itself. I initiated a contract on an I Phone 6 handset on 1/11/2018. Ten days later the handset displayed technical faults which was confirmed by the Vodacom store as mentioned. I requested a new device due to these noted faults were confirmed by the store. Despite this I received a message on the 23/11/2018 that there was no fault found on the handset and I was to collect the I Phone 6 from the Vodacom Repair shop in Greenacres,Port Elizabeth. I voiced my disagreement and requested to cancel the contract due to this. Despite assurances from Vodacom Mobilities, more than a month later since starting this contract I am still awaiting feedback to confirm cancellation on a contract for which I’ve already been billed.Greatly dissatisfied and unlikely to continue any further business with Vodacom.