It is not a mandatory advisement if you want hardware replacement, as I said, you would get a replacement Homehub with out being advised of the charge, it is only mandatory if you want an engineer visit which is what you must have so they can check to see if the modem is faulty.
I stll fail to see how it is a modem fault if the problem is only with your wireless connection. The modem has nothing to do with the wireless siganal.
Nothing I posted was from FAQ. You appear to be confusing your-self over what a modem and a homehub are and what each piece of the equipment does. i.e the Homehub is a router and it can be replaced with out a visit from an engineer but you seem to know best. I will save myself wasting any more of my time with your problem.
I'm aware of what both do, and at no point was I confused, but you have made me very happy by leaving. Lets hope you can keep your word.