Why did my dad get a leave ticket

Okay so me an my father where in a match for Legends of the Poro King and our internet went down for no reason at all and both of us got kicked from the game at the same time its bad enough he had one of his old accounts taken away for no reason at all from not knowing what email he had but what sucks is that when we got our net back we log in and hes got a leave warning about being banned or something the next time he leaves a game yet when me and him play we sit through all the afkers and anyone that feeds then leaves so can someone please take that crap and fix it so he doesn't get banned we both have been playing this game since beta so can anyone at riot help with getting his old account back or at least take away this stupid leaving thing we have no control over our internet going down it says we both have a leave and the match lasted 8 mins so can someone like seriously help with this... to be honest this wasnt something we did on purpose we put up with it all the time in ranked and normal games we are sick of this issue of people leaving so if you want the history of the account ill give it to you in a pm we had no idea our net was gonna crash but its something someone shouldnt get punished for