If I were you A-B, I would let them in to service your gas supply. They cannot charge you for what they can't do. Imagine the look on the gas engineer's face when he realises you are disconnected (what a picture!)
I was lucky enough to witness an event, (for want of a better word) several years ago at the council tax office. A lady was queueing in front of me with her 15 year old daughter. When it was their turn they approached the counter and proceeded to give several council tax demand letters to the woman sat behind it. The letters had all been sent to the 15 year old and despite the mother phoning and writing to them, they were threatening bailiffs and court if the youngster didn't cough up the full amount.
Now the council tax office was packed out, and the mother was very loud and managed to convey to the whole room that her 15 year old daughter is repeatedly sent demands from this incompetent lot, despite living at the same address as her mother, father and brother. On top of that, the mother also whipped out their family bill to show that it is paid up to date.
The woman behind the counter didn't know where to look, everyone in the waiting room was sniggering........ How embarrassing!!!
The mother's final parting shot was........"Sort this out, or I will be taking these letters to the Observer and the Telegraph."
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Never put off until tomorrow what you can avoid altogether.
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