BT has accused TalkTalk of refusing to back Ofcom's efforts to introduce automatic compensation to aggrieved broadband customers.
The watchdog has proposed new regulations which would require telecoms firms to automatically pay out to customers if they experience missed deadlines, slow repairs, or if an appointment is not kept.
Ofcom believes this could result in as much as £182 million in extra compensation being paid out annually, with households set to get £30 if they wait in for an engineer, only for them to fail to arrive or for the appointment to be cancelled at short notice.
According to John Petter, Chief Executive of BT’s consumer division, his organisation has agreed to this principle, along with Sky and Virgin Media.
However, he said TalkTalk has so far failed to follow suit, the Telegraph reports.
"The industry needs to get its act together," Mr Petter commented.
"There’s one provider that’s resisting this, it’s TalkTalk. If there’s anyone here from TalkTalk, please come on board and back the code of practice please."
The latest figures from Ofcom indicate that BT, Plusnet and TalkTalk were the most complained about broadband providers during the fourth quarter of 2016.
BT was the subject of 33 complaints per 100,000 subscribers between October and December. Plusnet was not far behind, with 30 complaints per 100,000 subscribers, while TalkTalk racked up 29 complaints per 100,000 subscribers.