That depends on the amount of damage you did to their business. At the very least, you could be charged and convicted for "Unlawful use of a communications device." Usually no jail time, but a hefty fine. Depends on what the judge has in mind to encourage you not to do such things in the future.
Far worse would be you are ordered by the court to pay restitution. Good luck with this one, and I hope your parents can pay for what you've done.