heh, hehe.. i sure don't. i just wait for the first letter that tells me "now you have 10 days left".
oh, and, btw, yes, it's quite normal to get plugged off if you forgot to pay something. happens here with cellphones all the time. the fun is.. how do you call them then, to tell them "hey, you suckers, i'm just about to pay my bill, wtf why did you turned off my cellphone?!?!?".
how do you tell that if the cellphone is what you have to use for it?