I've returned my kit as asked several weeks ago but I am being harassed by BT threatening to charge me.
I can't reply to this message either!
The post office said this is a common scam!
Should I contact my lawyer?
do you have the proof of posting from the post office? if so contact billing using 'message us'
https://www.bt.com/help/contact-bt/account-and-billing/broadband