Contract with contractors. Saying there not making any money

[Joshua D.]

So my contractor is complaining about how hes not making any money and completely under bid the job. I bought the house based on his bid then i even helped him out and raised it another $8,000. Then again saying hes not making anything and had to borrow money from hos brother which is anotwr contractor and there working together. No hes saying all his bids are gonna go up tremendously. Im really feeling hes not gonna hold up his end and be able to complete the job with the funds left and draws. Very frustrating because he told me before i bought it the price and now saying was a estimate then i went back higher and coming to me complaining bascially. What to do?