Disgusted

I am so disgusted with this so called Vodacom as i received a draft summons this morning that i owe vodacom an amount. What a joke! to clarify this sweet and short i had an uphill battle in the month of August regarding a debit order that vodacom did not debit on the due date only to call them and tell me that it was a system error i then was re debited on the 5th of August then only then to find out 5 days later that the amount was not allocated so i could not obtain a cancellation letter as i wanted to cancel my contract on the 17th on August i was issued with a cancellation letter and the amount was paid on the very same day. How do you issue a cancellation letter only later to find out that you in arrears with an amount? how do you a cancellation letter if knowing that if your account is in arrears surely that amount would also reflect on the cancellation letter but unfortunately it was not allocated. I have all records of my account with vodacom an if they feel that they can just issue summons to clients when their own people are not doing there job properly. Vodacom better get to the bottom of this matter