My parents think i’m lying but i’m not! what do I do?

my parents called me to the kitchen and said that when i went out with some friends last night i was drinking. i told my mom when she picked me up what happened how there was some teenagers drinking and that i didn’t know who and how the manager of the establishment questioned me and asked if i was drinking. i said no, and i walked in a straight line when she asked me to. they say i had a shot of rum and then ran to the restroom and threw up but that’s not true. i only drank a bottle of water that i bought and at three points i ran to the bathroom but the first time was because i had an anxiety attack, the second time was because i was having an emotional break down and i was crying, and the third time was because i was calling someone. i don’t drink at all. one of the kids that i actually did know who was drinking has been snitching on everyone saying that me and a bunch of my friends who were there were drinking when we weren’t. the manager claims that she has photographed and video proof that i ran to the restroom with my hand around my throat but i assume that she’s thinking of when i was crying i had my hand covering my mouth and i was shaking. i pushed passed a bunch of people and then came out a few minutes later when i called down. i don’t know how i’m supposed to convince them i’m telling the truth when they’re dead set on the fact i’m lying.
My parents think i’m lying but i’m not! what do I do?
My parents think i’m lying but i’m not! what do I do?
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