Customers complained more about Virgin Media than any other supplier in the first three months of the year as millions of locked-down Britons were forced to rely on their internet connections to keep working.
Regulator Ofcom said it had received 33 complaints per 100,000 customers that Virgin Media had during the first quarter.
This meant that by some distance the broadband provider was the most complained-about company on Ofcom’s list, which includes firms with more than a 1.5% market share.
Joint second on the list of the most complaints were TalkTalk and Vodafone, with 24 complaints per 100,000 each.
They were followed by Plusnet with 21 complaints per 100,000 customers.
Fergal Farragher, Ofcom’s consumer protection director said: “These complaints figures are from the peak of the pandemic, which was a difficult time for everyone, including businesses.
“But some providers clearly struggled with customer service more than others, and we understand how frustrating that must have been for their customers at a time when they needed their communications services the most.”
He added: “We have been clear to providers that we expect performance to now return to at least the levels we saw before the pandemic hit – or even better.”
The report is released quarterly and this time includes the period from January to March this year, the third lockdown period.
The average complaints were fairly stable, increasing from 16 to 19 per 100,000 customers across all suppliers, largely driven by a rise in Virgin Media complaints from 23 to 33.
EE and Sky were the least complained-about providers, honours they have held since 2019.