Customers are still having a hard time obtaining their MAC codes when switching broadband provider.
This has been suggested by the latest evidence from Ofcom, which has published a list of its top six complaints.
Problems relating to MAC (Migration Authorisation Code) codes are in the list, with broadband subscribers sometimes struggling to receive the information they need in order to change suppliers.
According to the latest guidance from the industry regulator: "A MAC should be given to a consumer by their current provider within five working days of a request.
"A MAC may not be required where consumers are being supplied with broadband in conjunction with their telephone service over a fully unbundled loop or via Virgin Media's cable network."
Commenting on the appearance of the MAC code issue in Ofcom's top six, Broadband Choices Product Director, Michael Phillips, has urged providers to comply with the rules in order to boost customer satisfaction levels.