MTN refund nightmare

I took out my LTE account end of August applying online and making a manual payment of R470 on the 31st for the new month. On the 2nd of September MTN processes a debit order off my account for the same amount. I call them notifying them of the problem on the 5th of September where I am told that they will processes a refund. Comes the 15th of September they debit my account for another R401 as this is what's owed to them apparently?! Bare in mind I have paid R1341 in contributions for a month and a half of being on a R429pm package. I then call back in on the 19th of September to follow up on my R470 refund where I am told by another lady that I need to send them proof of me paying the amount. After the first lady not informing me of any proof when calling on the 5th! I then send the proof of payment and then get told it takes up to 14 working day for the funds to be back into my account. Now comes the 9th of October and the 14 days have passed now they have done nothing on the refund! The call center has no clue what I m talking about everytime I call in and no one can give me a manager's details so I can escalate the matter! Multiple so called managers were supposed to contact me back yet never do no wonder the service is pathetic because the manager's are also! Would not recommend there bunch of ****** they are quick to take your money but try getting back what is owed to you never happens! I'm not sure if there is a ombudsman for telecommunications but would love to take this further!