debited again from my account

R120 was debited from my bank account again on the 20/01/2016 with the same reference MTN Eazy recharge, I don't know what is happening because now I am forced to close my bank account because I cannot keep money in my bank account, each time there is money it gets debited without my concern and my debit orders are returning unpaid and MTN say they don't see anything. please take this serious now total of R540 is debited from my bank account without any explanation from MTN. so please investigate it because if is not MTN that means someone is *****ing money from people using MTN as reference and it affects MTN reputation.