No client service client means nothing they have more clients they can handle so why should they care?

I have been client and my account is paid in advance for the year. I have requested an invoice several times but I never receive. My Internet is cut due to account problem. I never received an invoice or warning. It is my submission that they don't care about client or client satisfaction and would rather join service provider that treats clients as client or even provide an invoice. They would rather loose a good paying customer than focus on basic service. If an invoice is provided then payment will happen not for client to guess and do work for them.