Phone Still Blocked/Blacklisted

I've taken in my phone on the 2nd of November 2015, and was told by BK the consultant at the store it would take up to 5 working days. Till to date the phone it still blocked and Mr Vilakazi was the one whom has taken over the matter and updating me on a daily base until last week Thursday and now none of them are taking my calls and I've submitted every document they requested from me to unblock my phone and they are failing. I'm using the phone for business and now I can really do much. Even head office was sent an email and they have not also come back to me till todate.