Lawsuit coming?

Well, after more than a year, Gr. Moving has laid down the line and given us until the end of the month to pay them an additional $3900. We've bantered back and forth in emails and while never agreeing 100% with our logic, they've backed down from $6100 due to mistakes they made. We finally time-lined it out and put some figures down and without getting nit picky, we feel they owe us $2400. What's so frickin' frustrating about this whole debacle are a number of things:

1. I made the mistake of thinking that the branch manager was a friend of mine, he has never returned my calls.
2. I made the mistake of trusting the verbal and handshake contract.
3. The blame is often laid on me, I said this, wouldn't do that, wanted this, moved more than I said. All lies.
4. The amount of money we paid already is double the initial estimates, with money paid to Gr. Moving and PODS.
   
5. And lastly that this has caused a lot of stress and sleepless nights for the both of us.

Will I move again? You bet! Will I ever hire a moving company? Not likely. I've learned a lot, but the biggest thing I learned was it doesn't cost $30,000 to move.