You are once again throwing random claims on the table, when as a matter of fact your client still does not have what they paid for while you keep the money, not to mention the stuff Sayhas pointed out.
You would be more believable if you hadn't instantly ran to delete every single incriminating conversation with the client on telegram and wherever else you could. For example, you could have taken pictures of the messages where they 'treated you disrespectfully', or messages where the client would have said that they were in any way satisfied with their work.
Having a big portfolio is no excuse nor reassurance to this topic, since, again, you have the money and the client does not have the product.
Man up, admit you fucked up, return the money and move on, if you give at least a single fuck about your reputation.