At least you know what you want 
sponge one more chance then, if it doesn't come off, forget it. The weekend one could be telling the truth, if I wasn't on contract I'd probably be running out of credit, I used to when I was on pay as you go. I've just checked mine to see if it needed charging only to find it's been switched off, most likely since Monday, since that's the last time I looked at it 
Lueji if you're happy to let it run a while longer than do, listen to your instincts.