Ok so my ds age 13 has run up a phone bill of £50 due to texting a question and answer number . He claim he didn't know what he was doing but looking on their website the charges are clear. He has spent the last of his own money on a very expensive top last week so no money to contribute to the bill. I've said he can work it off but what jobs should I get him to do. I was thinking clean car inside and out etc but what else?