Not communicating with me. Not providing me with relevant information. Ignoring the problem until its not their problem any more. any

An agent from Mondo buy phoned me regarding a cell phone contract. I accepted the contract but ever since I did I have only had problems with Mondo Buy. When I spoke to the sales person she told me that the sim cards will be ricad I must just show the driver my ID and proof of residence, when they delivered the devices I said to the driver here is my Id and proof of residence he then said that he doesn't need it everything has been Ricad already. I then phoned to have the sim cards activated, but they gave me the wrong number for the activation department. I had to phone this number and that number to get the correct number, costing me airtime. I finally got the correct number just to hear that they can not activate the sim cards because it's not Ricad. They then told me that I had to go to a MTN store and have them Ricad there. I work from 7am - 6pm, Monday to Saturday. I don't have time to go and stand in a MTN store. So I phoned to cancel the contract (within the cancelation period). So the lady says take the devices back to a MTN and then they will cancel the contract, I told her send me proof via email that you are busy cacelling the contract then I will take the devices back, I cannot take the devisec back and then they deduct money from my account so she says no then you can just claim the money back from MTN, so that now is another hassle to get my money back from MTN. The lady at MOndo then said okay she wil send me a letter saying they cancelling the contract, up to today no confirmation has been received and NO phone calls regarding this matter. Then obviously the debit order went off but not even for the amount that was given to me but almost R250.00 more. I phone Mondo Buy and asked them to please sort this out, never once in my conversations except for today did the sales ladies tell me that if I don't take the devices back to MTN before the expiring of the cancellation date with Mondo Buy I will have to pay a cancellation fee with MTN and that this is no longer their problem but between me and MTN and now I have to pay a cancellation fee at MTN. Due to the sales people at Mondo Buy not giving me the correct information I now have another problem to solve. I will take the dives back to MTN but I am NOT paying a cancellation fee due to information not given to me. Mondo Buy need's to cancel this contract asap.