Trying to be serious here now.
First of all cancel that £280 duo. You certainly do not need a duo! One girl is enough. That will half the price for starters.
Maybe limit yourself to 30min punts with a top of £80 a visit.
When you are tempted to ring a whore, have a wank, set up an ISA and transfer money in there. Maybe get one where you can't take money out for a certain length of time without penalties. Start saving for a house deposit or a car etc.
Do other stuff - join a gym/sports thing, go watch sport, go to the cinema, try make effort with your male mates more often - go to the pub, go bowling etc. Maybe even try get another job alongside whatever you are doing, maybe 2 shifts a week in a supermarket or something - less time to punt but more £.
Maybe get a porn account. Brazzers is about £70-80 a year, some other sites are even less. Less than a hour with some girl, you'll get 24/7 access for 365 days. I had one in 2013-14 and didn't punt at all in that time as the scenes are always good and plentiful of updates, plus all the content already on there. I am tempted to get another but now they've introduced re-billing automatically and before it was just a one off, maybe get a prepaid credit card with fake details.
Don't steal from your family ffs, at 19 I assume you are still living at home so certainly don't want to piss them off.