Yea, i would, unless they know as much as us

. Maybe IS decided to chop and change their policies and now Afrihost sits with egg on their face. Sure Afrihost can go and say "sorry, IS is screwing us, the accounts we are reselling have certain limits and we can't do anything about it until May or until we have changed our agreement with IS" , but ultimately this is not what anyone using a reseller package wants to hear. I mean if Afrihost said exactly that, you will STILL CANCEL, wouldn't you? In fact, even myself would cancel if i know outright that IS is deciding the policy and Afrihost can't do diddly squat about it....i mean why am i gonna stick around? You would still move to a larger ISP that is not reliant on IS policies [and we all know who that is].
I'm sure as a reseller you also don't want to send this sort of message. Not only are you badmouthing your supplier [no matter how nicely you put it] but you're also admitting you can't add value to the service and basically are being hold by the balls by the supplier.