jedz - 6:02 am on Jul 12, 2010 (gmt 0)

If the potential client, gave their interest on the product/services that you're offering but still they haven't 'pay'/ close the deal / still no response after several follow ups. I assure you that they got other providers.

If your actual client, do not contact you nor answering your emails after the services that you have provided, mate.. move on and look for more projects..You should strictly follow 50% upfront..