YOUR OWN FAULT ENTIRELY FOR SIGNING UP TO A STUPID BROADBAND PACKAGE.
According to this page:
http://www.productsandservices.bt.co...dTDG_broadband
Option 1, which you say you are on, is:
£14 per month for the package.
£10 per month MINIMUM for line rental.
Total:
£24 per month
For a 10GB allowance with £1 per GB charge after that...
YOUR OWN FAULT.
You obviously thought it was a good deal at some point else you wouldnt have signed up for it.
You must have money to waste.
There is a package for £18 (£4 more) than what you are paing which gives a 40GB allowance.