Poor Service with getting device

I app**** for 2 contracts at Telkom Mobile Alberton City last week Wednesday. When I went back for an update the next day, they hadn't even loaded my application. Then I found out the guy I dealt with wasn't even on duty! He just left everything. So the next guy loaded the application. I phoned the next day and he informed me that the application was successful but he didn't phone me because they don't have stock. He promised they'd have stock the next day. Then I went back and there was no stock, only a promise that the stock would be there the next day. They also said they would ask the other branches if anyone else had stock. You guessed it, no stock. He told me that I would have to wait until Tuesday. Tuesday came and went, no stock, just empty promises. I started phoning around to various stores around the province. 90% of them didn't even answer the phone. I personally went to both stores at Alberton City, and at Eastgate and The Glen. They can't help me and just shrug their shoulders. They refuse to give me their head office number so I can speak to people myself. The website doesn't even help. Should I rather go to a different service provider? How difficult is it really?!