TalkTalk lost another 19,000 broadband customers during the second quarter of 2012, it has been reported.
The rate of subscriber attrition increased slightly on the first quarter of the year, when 13,000 switched to another broadband provider or cancelled their services.
This means TalkTalk's broadband customer base fell from 4,066,000 to 4,047,000 between April and June 2012.
TalkTalk said the figures reflect a soft gross additions environment and longer lead times on connections.
However, the firm noted that another 66,000 customers signed up to its higher-tier TalkTalk Plus broadband deal during Q2 2012.
And it also recorded ten per cent growth year-on-year in fully unbundled customers - which represents progress for the firm.
Describing the last quarter as "an encouraging start" to the financial year, TalkTalk Chief Executive Dido Harding said the firm is continuing to improve customer service.
She claimed that the company returned to customer growth during June, although this increase in subscribers was offset by losses in April and May.
Ms Harding said the improving subscriber figures provide "a great base" from which to launch its new YouView TV service.