No Rock And Roll Fun

WELL, THAT'S NOT HOW I RECALL IT: There seems to be a slight variance in the recollections of Robbie Williams and Eveline Savara: in his book, Feel, he reports they used a banana as part of three hours of oral sex; Savara claims that there might have been some cuddling, but there was no sex. Savara says Williams invited her to his room for a chat, and she got there to find him working on his laptop (this works best if you read it in Kenneth William's voice); she's most insistent there was no sex, and now is muttering about legal action.

This prompts us to wonder: if you buy an autobiography believing you're being told the whole, unvarnished truth, and it subsequently turns out to include fibs, can you sure to get your money back? And if so, on what grounds?