Hello @Shasan I can see he is in a signature campaign with coinomize project will suggest you write to his manager to withhold his weekly payment and then send it to you as payback instead of him not paying any to you for the whole weeks with interest I believe this will also help. whenever he is not getting paid from his campaign then he will have to write you back, I trust his manager will understand as well. I don't know if other person already suggested this to you as well.