there is this guy called madrbot accusing me of stealing his textures when i made the textures for someone on request and i dont even know him
anyone suggest what should i do
i definitely did not steal, i still have the psd files
and i'm afraid he's gonna report and ban me

Don't do anything. If he reports you, he will need proof that they are his textures. There will be some investigating and if you are innocent, you'll be off the hook.