Shocking service from Vodacom Plettenberg Bay

I took a contract out with Vodacom on their Huawei p8 lite . Before signing the contract, I asked which was the better phone between Huawei and Samsung j5 and was informed that comparably, they were the same but contract wise you got more for the Huawei . So I chose the latter and went back two days later to have my info transferred from my present phone to the new one. The assistant opened the sealed box and proceeded with the task. After two attempts which failed he said that the Huawei phone commonly had software problems and the phone had to be sent off for repairs. In the process he lost some of the info on my present phone which I discovered when I got home. I then said I would like to cancel my contract and open a new contract for a more reliable phone to which he rep**** that I could not and argued that I had signed a contract ( his response was in such a rude manner that another assistant had to stop him and take over) I have since discovered that another family friend has taken out the same contract and is experiencing the same problems. I am feeling completely ********** by the fact that they knowingly had me sign a contract on a phone that they knew to be unreliable, especially when there were other options. I feel that this is ******** and the rude staff member is unacceptable . In the meantime, I am being charged for a phone, via stop order, that I don't even have and have never even held in my hands. It is now two weeks since the phone was sent away for an assessment to the problem and am no closer to resolving my problem with Vodacom Plettenberg Bay. Furthermore, they have also told me that should the phone be repaired, I have no choice but to keep this phone and cannot change the contract to a more reliable phone. This is unacceptable!