Welcome to the site Sam.
Yes all alternative line rental suppliers line faults have to be dealt with by BT, other then Cable Companies,and possibly Bulldog.
Homecall offer may be a good one if you want Broadband.But i do wonder if many people using these all calls inclusive packages are using them to the full.Lets take a £10 package if you were to use 18866 it would give you 500 UK calls a month.How many people apart from high users make that number of calls.
Apart from the line maintenance aspect,if you change your line rental provider you lose the ability to use the 1280 BT Access which gives you cheaper NGN calls.
I would suggest its still better for people to keep BT ,and register for One Tels Free Weekend Calls.That way you get
Free Weekend Calls From Onetel.
Free DQ service from Onetel.
£2O credit if you join OneTel online before the end of May.
Use 18866/1899 to make all your weekday,Mobile,Intl Calls.
Still have the use of the 1280 Bt overide for Ngn calls.
I have just noticed on Bulldog they are offering up to 4mb.8hrs online.Line rental.All Uk calls free apart from NGN for £28 for first 6 months.
www.bulldogbroadband.com