Again Vodacom makes a mess

About 2 Months ago I had a complaint about Vodacom charging be BIS although I havent been on Blackberry for a few month - Eventually about a month or so they phone me and said that they will refund me - They asked if they should pay me back in cash or if they should credit my account - I specifically said that they should not credit my account and that they should pay it into my bank account - Now they paid back the money and credited my account - and now I get a computer voice phoning me saying that my account is in arrears and I should pay the money or my account will be suspended - NO Vodacom you made the mistake - Wait for next Debit Order time and then correct your mistake - Cant believe a company like you make silly mistakes like this and then try to make me feel bad about your mistakes - NOW you wait, you made me wait long enough - Take it off on my next Debit order - AND PLEASE GET IT RIGHT - I expect this to be dealt with as customers are getting tired of this bad service for you