Showmax billing dept taking chances

Showmax deducted double pmt in May and again received pmt in June, because I did not know about the double pmt in May. I changed the billing info to another account as the account we were using isn't generating income. Then after I amended the account details which they already used on the 5th to debit the account for the June subscription, they went ahead and took an amount of R8.50 p/day for the entire month of June, from the previous account which is not even supposed to be available for debiting as I amended the billing details in May.

When I sent them an email enquiring this, they came back saying, the debit order came back as insufficient and that's why they are trying to retrieve the amount from "the old account".

The entire amount of R8.50's for June = R229.50

This is what they caused in our bank account. I told them they had no right as they actually owe us one month's free subscription as they deducted twice in May ...

I also told them that due to them already having all the pmts and 1 month's additional pmt, they have to refund us the R229.50

When I rep**** and said they have to come back to me with a constructive solution and not excuses, they don't even reply. Surely they know they're in the wrong.

I hope you can assist as I am not hearing anything from them, they refuse to own up to their mistakes.