Not with BT infinity but with Sky (although obviously BT openreach manage our line). We've had no phone service since the weekend, and they are 'looking into it'
Broadband is fine though weirdly.

TBH our phone line and broadband have been really variable for the past couple of years, sometimes the line is so crackly the phone is inaudible, broadband drops regularly, doesn't matter which provider we are with, have had various BT engineers out all say the line is fine or give different advice none of which solves it. We don't really know what to do any more. Anyone else have this problem?