My company partially took down a tree for a customer November 7, 2017 that was suppose to be a removal. We found bees and had to stop the removal. The customer was to have the bees removed by a professional or his choosing, and then contact us so we could return to finish the tree removal. After not hearing back from the customer for several months, we contacted him to check the status on the bees so we could get the job completed. Customer hung up on me, said we should've completed the work, and he won't pay. Another call was made to the customer that day. Customer stated he won't have any money for several months due to eye surgery, does not want us to complete the job, but he will pay us only for the work completed but not until September, 2018. I called the customer October 8 to make certain he had our correct address since payment was not received. The customer said he doesn't have any money, it has been too long since we were there, and we are in breech of contract for not completing the job. Please advise.