Bad Service & no accountability

I contacted DSTV on 01/01/2016 with the intention of upgrading from Compact to Premium. I spoke to a guy who advised that if I upgrade I will only be able to downgrade on the debit order date. I said to him I will rather not upgrade because I am not home during the course of the week. In the first week of February I received my bank statement and noticed that an amount of R 799 was debited from my account, I contacted DSTV and spoke to a lady who advised that my services were charged to premium and when I asked on \whose instructions\" she mentioned that there was a downgrade done on 19/01/2016 and an upgrade done on the same day (kindly note that i did not call DSTV on the 19th). The lady advised that she will refer the matter to her manager and i was on hold for a couple of minutes she came advising that they will downgrade my services and there will be a credit of R 399.00 on my account. I asked if the same amount can be refunded to my account and she advised that they will keep the aforementioned amount, the debit order for the month of February will not run. To my surprise, my account was debited with an amount of 234.00. Please refund my money. "