@LJ24
An electrician shouldn't be touching a telephone connection before the master socket: that's Openreach territory. They can legitimately work on extension wiring, but don't necessarily know how.
You'd have to log the issue with Sky, but it would probably be Openreach which investigates it.
Note in this context it's Openreach, not 'BT', although Openreach Ltd is part of BT Group.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
