Are you sure it is not CCMA? Code of Conduct of Mortgage Arrears - which they can set aside. CPC is Consumer Protection Code which they cannot set aside.
You phone immediately - be very civil - and say you understand they record calls - and that you made one (or more) on XX/XX. Tell them what you said particularly that you offered to pay and that all this is on record of call- and say you want this investigated immediately - and ask for name and send a registered letter immediately outlining the facts and that you want this resolved immediately.
Contact - Irish Mortgage Holders Organisation for impartial and free advice.