can you communicate with the experts via text

The leading players are Zendesk, GrooveHQ, and FreshDesk. I have used all of these and my vote goes to Zendesk. I talked about it as a case study for a documentation task, see http://www.vinishgarg.com/2014/09/kb-case-study-pain-points-and-analysis/. I am also co-founder of @In23Hours where we develop product KBs in Zendesk. If you have any specific questions or doubts, setup a call and I can explain everything that you may need to know.

If I understand you correctly, you're saying a customer agreed to pay you for services (product and/or support), either through posted prices and a shrink-wrapped license or through a written contract, and then you provided those services, and then they didn't pay? And you're asking whether it's "OK" that they didn't pay? Of course it's not OK! Is there any business who could operate in that fashion? The way it affects the customer relationship is you don't have a customer relationship. You have a situation where they are taking advantage of you. A relationship goes in two directions.

Hello! I want to ensure that I understand the question. Are agents having to call customers back in order to resolve their issues or concerns? If so, I would ask how well-versed are the agents in the business/product? Do you have a knowledge base or ongoing training to help the agents to stay on top of the changes in questions that are being asked and how to resolve certain issues? I'd love some more information about the timing and reasons behind the timing to make a better recommendation.

zendesk. They have a pricing scheme for start-ups: http://www.zendesk.com/product/features/startups/

Most customer service jobs are going overseas, but this is a great website with only remote jobs that might be useful: https://www.remoterocketship.com/?page=1&sort=DateAdded It's a relatively new site, but they're doing a great job.