got that same letter today, and promptly rang Pinnacle, as i thought that i had cancelled this years ago, but they had
full details of my new address, which i just moved into last december, also updated details of my chip+pin aib visa.
anyway, i'll bet Pinnacle will be inundated with cancellation calls from AIB Visa card holders, who thought thet had cancelled the Sentinal service long ago. the fact that the charge is only levied once a year from the CC account probably means that most ppl overlook this.
anyone, mine is cancelled now.