Me&you, no, You&you

For three years I used a Me&you simcard and was very happy, I think I had problems once. Now in the lockdown, I requested to cancel my membership via email, and they responded via email stating that the cancellation is complete. A couple of weeks later a lady from there called me and said that I owe them R400 odd. I explained that I have canceled my contract and that I am paid up to date.

Another week or so went by and a debit order went off for the R400 odd, for some reason this could not be reversed. I have called multiple times with either no answer or the line is to busy so the call gets canceled. I have sent multiple emails with no response.

You&me mobile owes me my money back plus the original deposit that I paid when I opened the account.