Appalling Service

I've been experiencing the most terrible service with this company. I app**** online for my cellphone contract and no one even contacted me to explain how the contract will work and so forth. On the 24/05/2018 my handset was delivered but i didn't have all the documents they needed, so they advised I can go to their warehouse to collect it which i did on the very same day, the next day they deducted the monthly subscription which I have never heard of in my life, I contacted their call centre to query about the debit order but there was no one to assist so I reversed my money back to my account then a week later I got a call from the accounts manager of Intellicell named Mrs Ryklief who was calling me with names and the ***** I made for reversing the money, only after a long time trying to explain what really happened she appologised and promised to rectify the problem and give me a call back the next day and she did not keep her promise. Today I called Mrs Ryklief she was so rude as usual, discriminated me, even said I was lying she never spoke with me. I asked her so many times not to use the tone she used and I ended up saying I will cancel the contract with them as they don't have customer service. I have never been so undermined by someone who don't even know me, Mrs Ryklief's behaviour is very appalling I must say.