I always had the idea that when I signed up for eclipse I paid them £15 for the first month and then so on always paying for the next month in advance.
Their code of practice says they bill you in advance and the bills said "1 month in advance".
However on leaving I was suprised to be told I still owed them for the previous months internet. When I looked at my bills more carefully they said for the november 2nd bill;
1 month in advance from 02-Oct-12 to 02-Nov-12.
So yes it appeared that despite saying "in advance" they then had the dates written backwards? I thought this must be a mistake in writing the bills but when I queried it I was told no the "in advance" did not mean in advance and so I had to pay up...
The paranoid part of me still wonders if they have just misworded their bills and are now happily assuming they are right. But they may well be right and perhaps I did owe them. But if so its a really confusing way to operate!
So be carefull I thought I was half a month in credit when I left, but no I was month in debt.