Called with a billing query on the 31st of March s

My account with vodacom was 2months in areas with an amount of R1885.51. I received 2sms's informing me my debit order was no longer in place. On the 24th of March I made an atm deposit of R2000. On the 29th of March I received a notification from my bank that vodacom tried to debit my account (I incurred R180 bank charges). I called vodacom to query this on the 31st, the consultant advised that she'll log a query with backoffice and they would contact me within 48hrs. I did not receive any communication from vodacom until I called again on the 9th of April and on the 11th for feedback but I was told someone would call me back as they were still investigating my case. Today (19/04) I called and asked to speak to a supervisor; my call was transfered to Brenton Matthew who was very arrogant refused to listen to my problem and demanded that I provide proof that vodacom sent me sms's informing me of a cancelled debit order because there was no record on the system of them sending any sms and it was impossible for vodacom to retrieve any sms sent to customers. On top of that he told me I'd be billed R100 for an unpaid debit order(29/03)