Complaints about phone landlines, broadband and pay TV have failed to drop over the past quarter, with Ofcom telling providers to "continue to work to improve their performance".

TalkTalk generated the most complaints among landline providers during the first quarter of this year, increasing slightly from 0.36 to 0.39 per 1000 customers, double the average.

Complaints about BT landlines stayed level, quarter on quarter, at 0.20 per 1000 customers in Q1 2013, remaining just above the industry average.

Among broadband providers, Orange/EE generated the most complaints as a proportion of its customer base for the third consecutive quarter at 0.57 per 1000 customers. Complaints were mainly driven by difficulties in changing provider and service issues.

TalkTalk and BT's broadband also continued to generate above average complaints at 0.36 and 0.33 complaints respectively.

Ofcom's consumer group director Claudio Pollack said: "It's important providers continue to improve performance. Complaints help us to target any necessary enforcement action."