Which? UK broadband company TalkTalk has been named the UK 's most grumbled - about company , with 30 complaints per 100,000 customers , according to a report by the regulator Ofcom . A spokesperson for TalkTalk said the report covered mid - September 2017 , when the firm was closing its customer service operations in India , leading to some confusion for customers . BT 's company came second in Ofcom 's report with 30 complaints per 100,000 customers .
UK broadband company TalkTalk has been named the UK 's most grumbled - about company , with 30 complaints per 100,000 customers , according to a report by the regulator Ofcom . A spokesperson for TalkTalk said the report covered mid - September 2017 , when the firm was closing its customer service operations in India , leading to some confusion for customers . BT 's company came second in Ofcom 's report with 30 complaints per 100,000 customers .