Disappointing after sales service

Vodacom contacted me to offer me a contract, I was advised within 48 hours after receiving my device it would be automatically activated. 72 hours after receiving the device it still wasn't activated I then called the After Sales call centre and was advised within 24 hours, 24 hours later still not activated! I then proceeded and called the call centre again and was advised within 3-5 hours. 24 hours later its still not activated! This is extremely pathetic and unacceptable. Vodacom is supposed to be the leading network however is this the kind of service one is given. The after sales service is just as important but clearly no one seems to be keen on assisting me. It's pointless I have a device for a week but cannot use it! So I basically have to wait as I was advised that that there is one team leader activating the sim cards and he has a back log, a back log for a week. I basically want to cancel this contract as its not beneficial to me having a device I cannot use.