Really poorly trained call centre staff and a struggle to get my money owed back,

If i could give a zero star rating i would but that seems not to be an option. I have paid up my account and learned a few weeks ago that i had overpaid vodacom. I called the very unhelpful contact centre to claim back my overpaid amount of just over 600rand. I was instructed to send proof of my last payment ( which i do not get because clearly they were paid, but ok) which i did and still i receive messages saying i must send proof of payment. So i decided to call again and through the rumblings of the person i speak to ( because nobody at vodacom speaks clearly over the phone) I manage to make out that she is going to lodge a request or whatever she said. So today again, i call 3 times and after each time of starting to state why i am calling, my call gets dropped every single time.

At this point i am fed up because i want and need my money. If the roles were reversed i would have received many harrassing calls and threats of lawyers already because my payments to this *********** company had been finished in september already. I really want this sorted out because my follow up will be to the ombudsman