Try to just communicate with clients !

Mweb has sent me a statement for double my amount at the start of last month , when I queried they come back to say that it’s a double debit for January . Now this was never communicated to us as clients ! Now when I make arrangements for payment , you don’t debit on the agreed date , now I get an email to say that you will try again to debit today or I will get suspended . Please communicate with your clients and stop being ***********! We aren’t even allowed to now make another arrangement because once you guys just choose on your own accord to retry a debit we must deal with that with no choice !