Last time I ordered from amazon, I repeatedly declined prime. My bank called me the next day about a suspicious charge for a year of prime. I had to cancel my card and get a new one. The banker told me they'd had dozens of similar problems where amazon was charging people for stuff they never ordered.

When I got the package a few days later, the $150+ set of cello strings I ordered, sold and shipped by amazon, were counterfeits (and damaged due to improper packing, not that it mattered). I had to do a charge back to get my money back.