What can I do? What's wrong with "so long, and thanks for all the fish"? Tell them it's not working out, it's not worth your time, and that you found somethin

What can I do? What's wrong with "so long, and thanks for all the fish"? Tell them it's not working out, it's not worth your time, and that you found something better. If you're 3 weeks behind and they're paying you $2000/month, it seems that your worst-case liability is that you owe them $1500-$2000. I would probably tell them they can keep their 3% and we'll call it even. Bye.