Buiness treats Service Provider appallingly

As a Service provider to the establishment I can only say that they are a huge disappointment. We have numerous emails requesting months of outstanding payments, with little to no payments, our buiness is a very small family owned business, thus any outstanding monies affects our services and delivery to our other clients. I have the trail of emails to prove what I am saying, if this is how they treat their service providers, I would never visit this place