I want my money back, thanks

Hi Vodacom.<br> <br> I missed a debit order on the 26th of February. I since received a letter of demand on the 23rd of March informing me to settle the amount within 7 days or the account would be handed over and the balance of subscriptions would become wholly payable. The amount was deducted on the 30th from my account anyway, (within 7 days) together with this month's subscription. <br> I was levied a penalty fee of R100.00 which was not mentioned in the letter. As I have settled the R588.50 as due in the letter of demand within 7 days, and the letter did NOT mention a penalty fee, I want my R100 back please.<br> <br> Secondly, on the 26th of January 2016, R599.50 was deducted from my account, instead of the R588.50. Can you explain what the extra R100 was for as there was no other late debit order since inception of contract. If you cant explain that, I want my money back.<br> <br> Thanks