MTN contract cancelled but debit order active?!?!?

Following the recent complain i posted on this website, MTN assured me that my number will be migrated to prepaid in which they did, but they also assured me that there will be no further debit order deductions from my account but to my surprise, an amount of R314 was debited from my account month end June,thats after speaking to Sibongile on the 3rd of June and she assured me she has logged in a request to cancel that debit order. MTN please refund my money and stop that debit order for future deductions!!! How *********** can a company be though? I have sent emails because your call centre never works, but no reply, this is very time-consuming and takes a lot of effort to have to always remind you of what you are supposed to do.