ODCA privides guidelines for consumers who wish to change phone service providers.

This cracks me up. The ODCA refuse to deal with individual issues (cf the BT billing debacles) and refer people to Comreg who refuse to deal with people (where possible). Another toothless organisation who claim to be helping the consumer but in fact are only offering a withered figleaf of protection against the rapacious telcos. ODCA Top Ten Page