I had Sky+ and Multiroom installed a few months ago, didn't have extensions to the boxes & used temporary ones for the install day.
The engineer said that they would ring the boxes within a few days, next week & in a month to check that they are still wthere etc, esp with Multiroom as I could fit that next door.
Well, I never got around to sorting out the wiring & they have been without phone lines for several months.
Not heard a thing from Sky.
I will get around to fitting extensions, but I was not going to let the install guy do it, having seen the mess that they make.
if I do get a call from them I simply say, Oh do they not work? Oh I must have a fault on the extensions then
(and do it pdq)