Another bad experience

Good day I need help resolving a situation at hand with sell direct. An agent phoned me to say my telkom contract is due for upgrade and he told me about the good option and even told me its cheaper then what I'm currently paying only difference is the packages has changed and due to that they will have to give me a new simcard and number but I can after activation call telkom call center to port the new number to the old one. Only to come and find out after two days when simcard was activated it was never loaded as an upgrade but as an additional line a new contract. That to me is totally dishonesty. Then after phone arrived I first thought battery is draining fast because of the numerous updates on the phone and so on. But then I noticed when I had to charge the phone it says super fast charging but it takes 2h30min to charge full even if the phone is on 40% it says time till full 1h56min which I then realized the battery is faulty. Numerous calls made to try and find out what is happening and eventually agreement was that does not sound right and phone will be collected immediately so I had to clear the phone remove my emails and things. Now they claim no finding on the recordings was about an upgrade and it will be an additional line. They said they will be sending me the recordings to listen which i still have not received on my email, then another investigation will go on. I mean when they phoned me did they not listen to the recordings already in order to give the client solid feedback????? I requested to cancel the contract as I was not aware of agreeing to a brand new additional line they don't want to chance and I was well within my 7-10 days period even when they collected the device. The agent that phoned me today was not even aware that the device was faulty and returned already to them how do they attend to clients queries if they don't even know the full story?? Few years ago i also had the same problems with them as to a faulty device received and it was also a problem getting it sorted out. I don't know why I really trusted to do business with them in the first place after my last bad experience. I want to cancel this contract and need people to really be careful when receiving calls from Sell direct and make triple sure of what they say and if they understand what the client wants and how they word themselves. Telkom really needs to take this up and make sure when linking third parties as it gives Telkom a bad name..... If I was aware of taking an additional new contract or even wanted a new contract I would not have gone through all this trouble and stress seriously.