3 Days ago I put £10 in my Gas meter, yesterday it said 12p so I put the card in and £5 (which I thought was emergency) was transferred saying £5.12, today I go and put another £10 on and it read £12.59, thing is when I put the card in my meter yesterday it said £0.00 on card, but the emergency credit never went on, so where did the £5 appear from if the card was empty and the emergency wasn't put on?