Ofcom has published its latest complaints data covering telecoms providers.
The fifth quarterly report shows which providers have generated the most complaints to Ofcom.
In the mobile market, Ofcom received the most complaints in the period from Three customers, with 0.14 complaints per 1,000 customers.
For the sixth consecutive quarter, O2 was the least complained about mobile provider with 0.02 complaints per 1,000 customers.
As in previous quarters, the data shows TalkTalk was the most complained about broadband provider in the period, generating 0.56 complaints per 1,000 customers over the quarter.
Sky’s broadband service attracted fewest complaints – 0.15 per 1,000 customers.
Ofcom says the research aims to provide useful information for consumers and also to incentivise operators to improve their performance.
Since the report was first published in April 2011, it has included telecoms companies providing broadband, landline and mobile telephone services.
Overall, complaint levels are much lower for mobile telephony than for landline telephony and broadband services.