I was providing IT services for one of their clients from 10/22/18 through 5/23/19. My last payment was on 5/17/19 for work through 3/17/19. (It is normal to have a 6-week lag for payment.) They have not responded to emails requesting payment for work done 3/18/19 through 5/23/19. Some of the work was done remotely and some at the client site in NC.