Should I sue?

[Brandon Craig]

I invested 40k in a syndication 2.5 years ago. It was a 18 unit and a few triplexes. 

We were supposed to get our investment back at refi back in January (year 2)

And then cash flow every month after that until they sold it in 5-7 years

We haven’t received anything. They didnt refi, then tried to sell because they found repairs they apparently didn’t know about. They couldn’t find buyers. 

Now they’ve said they are holding for an Indefinite amount of time and since then they’ve stopped responding to me and email once or twice a year with corporate speak that says nothing useful. 

Am I **** out of luck here or can I get a lawyer involved?