ive got the opposite from shannons - they called me a few times when i had the ta22 asking how things were and if i wanted to up the agreed value - of course i said " hell YES!"
they also put me straight to rating one when i got the GT4 - gave me a standard rate for compro cover - even though my GT4 is considered " modified " and told me all the ins and outs to get the best from them when i turn 25 and start modifying the tits out of the Gt4 ( ie how to get the cheaper preferred rates )
dunno why they treated you like that mani - maybe you encountered a dickhead - or the NSW shannons callcentres arent as polite as the QLD and Vic branches