Just throwing my $0.02 in...

I'm in the middle of a warranty exchange with my Pronto. Everyone I've talked to has been more than polite and knowledgeable...

I was disappointed when they sent me the wrong model Pronto for a replacement but they're handling that to my satisfaction as well.

Don't know what your conversations have been like but I'd strongly suggest not going in with a confrontation in mind. Sets up everything to not go well. Treat as you'd like to be treated.