Horrible customer service

I am so gatvol with the service I have received from Vodacom. I bought a new phone on contract at vodacom loch logan, which I only had in my possession for 3 weeks and then it was broken and had to be taken in for repairs. I took it in on the 19th of april to another repair centre because loch logan branch was temporarioy closed and until this day I have not yet received my phone back. Turnaround time is 7-14 working days. It is well past that. I am basically paying for something I do not own. The service is well beyond terrible. I took in a second phone, also new, I was told I would have it by the next tuesday and that has come and gone and still no phone... This is poor and unacceptible service.