TELKOM *****ING MONEY FROM MY ACCOUNT

I got a cellphone contract for my sibling somewhere in November 2015, i agreed to pay R180 a month. My sibling recently got an sms saying that i owe R2800.I then phoned Telkom to dispute the charge and have the issue sorted, i was told it was a mistake on their side and they were mistakenly charging me for some transfer. I was assured that a case had been opened for me and that everything will be taken care off. I've now just discovered that Telkom did not sort this issue out and that they in fact took the money from my account. Today i received my first statement since taking out this contract and all it shows is that i payed R2800! I don't even know what I payed for. On top of all that suddenly i need to pay R237 a month. I've never agreed to any of these things and now these people are *****ing money from my account. Quite frankly i was already skeptical about doing anything with Telkom because of it's reputation and now I've just been proven right. I WANT MY EFFING MONEY BACK!