Don't want to drip feed but I'll try to keep it brief.
DS has ASD and a true love of online games, particularly those involving tanks
. Tanks aren't really my thing but each one to their own.
The problem is that in the first 3 months of owning his Smartphone, he ran up £700 of unauthorised purchases, mainly on tank upgrades and missile launchers. 
DS was read the riot act and had to pay the money back from a combination of his savings, doing extra chores etc. over a period of 9 months. I thought that the lesson had been learnt.
Unfortunately it seems not...after giving him Xbox live access (with a link to my credit card for subscription) he has already racked up £70 of spending in 6 weeks. I'd sat him down and explained very clearly that I was trusting him to be responsible and that nothing was to be purchased without consulting with me first.
I'm furious! I've now banned him from the Xbox etc until Xmas and swapped his Smartphone for a handset made in circa 1980 with no internet access.
What more can I do to make him learn that he is actually stealing from me? I don't want to blow this out of all proportion but I feel that he has let me down really badly. I don't want to raise a tank mad degenerate with no concept of truth and honesty. Has anyone had a similar experience or any ideas please?