A L Svc

I was told to do an inchassis overhaul on a series detroit engine which I did...they didnt tell me they had a low oil pressure issue also...in the process of trying to find problem...which was time consuming....I had a very hard time getting her shop foreman or her to respond to my calls for
permission to continue with the job as the cost would continue to rise...during those times I stopped work on that job & waited for communication...when I did get to talk to them I put the job back in line for work....this happened a number of times withat times ....weeks going by with no response....I still have not been fully paid on the original job & got the impression that they were having a hard time even having funds to pay the balance....as was told to me by their shop foreman...I will be happy to finish the job as it is taking up room in my shop....also idid not charge for the considerable time & money spent trying to find problem....just want to finish & get paid