MTN - *******

MTN overcharged me in the first month of my contract and has to date not refunded or credited me. I was sent my statement on 17 August and I was being charged 4x the agreeded contractual amount which is when I started emailing and calling MTN, there was sufficient time to correct the next debit order but it was not corrected and neither was the debit order after. Now, 2 months later I am still struggling to get my money back, I have numerous reference numbers, have sent them the contract twice and the social media team CONSTANTLY tells me my issue has been escalated or they are awaiting feedback. I don't understand how it is so difficult to just refund or credit me, I'm so tired of running after them for 2 months when they are in breach of contract!!!