Yesterday evening (i.e. at '01-Feb-2011 17:15') was the last reading of the old billing period and then nothing else for the next 8h. At midnight the new billing period starts and the usage which pretty much all happend before 8 p.m. yesterday gets thrown in with a timestamp of '02-Feb-2011 01:15'. That means that a certain amount of my allowance for this month (i.e. a bit over 2%) just "disappeared" into nowhere.
Now, the amount is not as much as has happened on earlier occasions, but every time again I'm getting upset. AFAIK I'm not paying 95-98% of my monthly charges, but I regularly only getting that much service (for 100% payment). Makes me wonder whether this is legal.