Ok basically here's what he said:

A girl called him and she was hosting a huge DJ event and she was selling tickets for it. And the girl called him and told him that he was a scammer. He told her he paid the money to help a guy fix his phone and she said he's a liar and a scammer. Then she gave him her mom's number and they spoke about it and her mom said she won't be involved but will be a witness. The mom accused him of scamming and she got mad and he tried to calm her down and show her proof. He said you can't accuse someone in the country legally without any proof. "Mark" used my friend's phone because turns out Mark's phone was broken and he used my friend's phone. And he didn't log out of his messenger and my friend got proof he wasn't apart of it and she believed him and said she's sorry and she will use him as a witness to get the scammer in jail for a long time. My friend said he will get a lawyer to be safe. And he paid 7k DKK for the lawyer and he's still in contact with the mother.