Similar troubles to you in West Norfolk.

The council waste site will accept one bin bag a week.

However they have a deal with a private contractor for bulk domestic
waste - 10 quid a car-full, 13 for camper vans etc. Now my only
vehicle is a VW Transporter van (oh and a motorbike) - my van fits
none of the boxes on the form - even though my waste is domestic,
can't come in.

My best option is to drive over into cambridgeshire.