Your post serves as a useful reminder to others, always obtain any form of eventual agreement in writing, unfortunately many people just take the suppliers word.

I have highlighted the fact before on a few occasions, that a verbal promise is often only as good as the paper that it is written on. Never-ever feel uncomfortable or embarrassed requesting written confirmation to any agreement, reputable traders will always be happy to oblige to confirm.....unless something underhand is going on, in which case walk away whilst you still can.