MYOB WOWS

Even though I have selected my clients not pay Invoices by credit card Myob still gives my client the option . This does not happen every Inv delivered but I'm charged the commission and the software does not recognise the payment. I have had multiple emails with Myob help and I'm now just sick of this and the loss of money . I have been an Myob user for over 10 years, does anyone else experience this and have you been reimbursed or compensated in any way