You seem a little confused there. Or am I misunderstanding the problem?
Infinity is the BT FTTC fibre product, and customers normally have to take BT line rental to have it. AIUI if you take it just happens, although I was told two or three years ago that my ordinary line rental would start a new minimum term to match the Infinity. But I don't know about the "New Customer" deals. Maybe you would need to haggle. Who are you with at the moment?
Nearly every other ISP also offers FTTC, and only a few insist on you taking their line rental. So you can choose any of those with your BT Line Rental Saver.
The biggie is Plusnet. However you lose all their new customer deals as well. Smaller ones we see often here are Aquiss and uno.
Sky will apparently also take you on and let you keep the BT line, at least for the first year, or maybe they would offer to pay it off for you. I think they have done that for some.
The indispensable man or woman passes from the scene, and what happens next is more or less the same thing as was happening before.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 59504/15641kbps @ 600m. - BQM
Edited by RobertoS (Sun 07-Feb-16 19:35:58)