If you find your tires have been slashed, we would call the police and make a police report. It may be that this was a targeted attack in which case the police will need to know. In regards to repairing the damage, if more than 1 of your tires have been slashed, you will need to call for a recovery to take you to the nearest tire shop for new tires. If only 1 tire has been slashed, you can consider changing the slashed tire for your spare tire.