Woke up at 3am to screaming from the field across from my house, followed by loud music playing for about 30 mins. Discussed with my gf that, if I phone the police, am I now officially an old man?

So I phoned 101, but whilst on the phone I saw on Facebook that it was one of the local schools proms that night, assumed it was them and hung up. I didn't sleep too well after but we were all young once I suppose!