disgusted with the level of service with Vodacom!!!

i have a double deal contract with vodacom, and i have always been a good payer. for some reason my account was not debited so my account went into arrears and i was charged a fee or the debit order not going out, so instead of letting me know this vodacom decided to debit my account again and charge me another fee for it not going out. then i get an sms saying my account is in arrears after all of this so i call in to make arrangements for payment and i make payment and i was advised that only my installment would be debited on the 1st when i get my statement i see that they still debited my account for the full amount that i had already paid without my permission so i call and they tell me that the reason for this was because the lady i made arrangements with to pay did not make notes of this o the system. but i was promised a refund and i will be notified along the process what is the status of this it has been a week and i have made 3 calls and each person gives me a different story today when i phone they are telling me that they owe me nothing because i still made sort when i infact paid R300 extra, this is by far the worse customer service i have ever received they take my money with no permission and now warning and then refuse to give back what belongs to me i am is this how vodacom treats their well paying customers????i am beyond disgusted. and on top of that i have been waiting 22 minutes to speak to a manager and currently while i am typing this review i am still waiting.