Builders RCS incorrect information

I have a builders account and received an sms a few weeks ago that my debit has not been received and I need to contact RCS. I immediately called the number given on the Sms to enquire why the the debit had not gone off. The consultant read my account number to me and 1 digit was missing. I alert the consultant and ask them to please update their system and if I could please email my account details again. She gives an email address I can send my details to apologizes and assured me they will rectify the error. I email documentation as instructed. No response. The next day I receive another message saying my account is in arrears. I call once again and the same thing happens, another email address another apology and I resend documents. The next few days I receive numerous calls and messages and am told my account has been handed over to the lawyers. At this point I am livid. My account was loaded incorrectly by RCS and my credit record is affected and worst of all, no-one responds. It is now the 26th and my debit order again has not gone off. This is Ridiculous! Please assist