Debtseo and SMSC ****

Debtseo and SMSC its a **** they **** me money and now I have to close my bank account because they busy debiting my account without any services. I accepted the debit order mandate by mistake now I can't block it or cancel it or reverse the money. their contact not working 021 054 7723. their email address is also not accepting emails info@smscconsulting.co.za