Vodacom upgrade via phone

I recieved a call from Vodacom Upgrades. Going through the the process and eventually agreeing to a deal. I was told that i would receive an sms which i needed to confirm the order. I never received the sms. I received one to say my order had been placed, but i could not confirm the order. I phone twice to find out what was happing with the order and i was told they would send the confirmation department a request to phone me to confirm. Which i never got. On the third time i phoned i wanted to cancel the order and having spoken to four different consultants, i was told it would be canceled within half an hour. When going into a voda shop to get my upgrade, i was told it was not canceled and they could not help until it was cancelled on the system. So again it was another call and having the consultant hold on to make sure it was finally cancelled. Worst service i have ever received. I will never agree to an upgrade via the phone again. On the positive side the consultant at the voda shop was most helpful.