Shit, I have to tell something.
I had a client, we have been making progress (on a shit budget.. I know I was stupid). Anyway, traffic was growing and in a few months we could hit that TOP5. Hard niche, tough competitors but because I got into it I said to myself I will deliver. The cocksucker didn't pay me for a last two months and at that point I was short (yes, it was that bad of a deal).
So I was soo FUCKING angry that I have almost left my entire business (clients) just to get that piece of shit. Thanks to taking some time to think about it I didn't. Still, I can understand that pain.
OP at the end it's just not worth the hassle. Because, just like many other have said here, you could build up your business in that time. And also getting yourself involved into that kind of shit, drives you in a bad direction in general.
Fuck this shmuck and don't let this bitch take any more of your time. Every minute you are thinking how to fuck up that bitch, you are actually giving him more of your time. Focus on good guys and lough at losers.
Yeah, so that's it.