Hi there Dave,
I had exactly the same problem and found the helpline people rude and very unhelpful.
However, if you take out the 'bin' and replace it with the bag, it works really well. There is obviously a design fault with them. I would never buy hoover again, but this one now works ok with bags.
Also beware of the telescopic hose......I have had my fingers badly pinched on more than one occassion!
Happy hoovering
Ruth
Ruth, July 2008