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.
“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.”
Virgin Media said: “Since Ofcom collected its data for this report, we have made a number of improvements to our customer service, including hiring more than 500 care agents, which has seen complaints decrease by 70%, putting them at their lowest level since 2018.
“We will keep investing and making improvements to give our customers the high-quality service they rightly expect.”
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.
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