aitime advance billing via debit order

i made use of vodacoms airtime advance service on the 18th of June 2015 on my data contract tablet however i never recharged my account there after i received and sms on the 02 June 2015 telling me that my airtime advance will be added to my June bill and the service will be available again for me to use june passed and i paid for it via debit order now im getting sms's telling me i still owe an airtime advance . but on the statement it says instant recharge but it suppose to mean airtime advance now vodacom is telling me that i still need to pay for it and i need to make payment arrangement for account as it is in arrears however it is not i have paid for it in full and there service still isn't available not that i want to use it but it means i still owe and no one knows what to do and my calls keeps on being cut i have rather taken the decision to have my contract cancelled with vodacom and will make my family do the same and i surly will let all my friends know about this ****ty service and let them do the same i can take my money and business some were else so pathetic of vodacom and non helpful agents even after you pay you as a client remain a non customer to them