Carnival called me again today - same PVP - and he also sent me a card which arrived in today's mail. And then another e-mail. This one had his Carnival e-mail address in it so I replied and asked if he bothered to look at my Carnival account he'd know I have and use an agent.
Persistence like this doesn't work with me. It tends to make me not want to book with Carnival. So, PVP "Ed"...time to walk away and leave Dave alone!