Multichoice stole money from me and they refuse to refund me

My DStv Compact Plus subscription was mysteriously cancelled and disconnected a few days ago so I made a couple of phone calls to their call centre. On the 23rd Feb I spoke to an agent who said I must make a payment of R783.90 to reactivate the subscription. I told her to downgrade my subscription back to Compact since the amount is sky high. The amount didn’t seem right and I asked her to break it down for me but she couldn’t, she couldn’t explain it but to my shock she mentioned that I’m being charged R99.00 for Showmax instead of R49.00. Even though I have a debit order that runs on the 25th of each month with them I still proceeded with the manual payment. Guess what!! On the morning of the 25th, I woke up to another debit of R733.99!!!! At this point I’m beyond upset and I call their stupid call centre again, I spoke to Samkelo (***-I155) who promised to get his manager Taahir to contact me so that he can explain the sky high amounts and the double-billing!! To this point nobody had contacted me, I specifically asked them to email me the amount breakdowns and refund my bank account but of course they haven’t done so! Dstv ****med me and they have ****** from me and they continue to mistreat me!! I want my money back, every single cent or I’ll make a trip to their office in Randburg to cause a scene!!! I want my money today!!!