Mobile giant Three must withdraw a "misleading" leaflet, which failed to include information stating that pay monthly mobile contracts could rise mid-term, the Advertising Standards Authority (ASA) ruled this week.
Consumers who received recorded phone messages from Npower could get compensation after the regulator found the energy giant guilty of breaching rules.
Orange has partly reversed a decision to cull totally free broadband for thousands of mobile customers, many of whom claimed the deal was marketed "for life".