BT charges for faults

[bunchie7]

The ******* at BT are trying to charge me �198 for fixing a fault on my line. They didn't tell us they would need access to our home as they said the fault was outside. My dad just happened to be at my home on they day they came as he was doing some electric work in my kitchen. Dad let the engineer in and the man said he was just checking the line. The area he was working on was the main engineers box and he made a point of saying we could not touch it, so therefore we wouldn't be charged for his visit. Two months later we are sent a bill for �198. They claim as a consenting adult let them in the house we have to pay. I want to know if legally they can do work in my house without telling me how much it will cost and not contacting me, the house owner, directly even though my dad let them in? Basically are they saying a burglar could let them in to re wire my house and charge me 4 grand with out saying anything to me and that's ok?! It's ridiculous!!!!!!