I also face this trouble sometimes. When I face this trouble I try to convince my client and try to understand his/her problem. And then I try to fix the problem. But there are some clients too who don't want any solution but canceling the order! Actually they're not real client, they're reseller or idea collector. You can't make them convinced with your service. So then I contact Fiverr Resolution and ask for the cancelation. Thank you. -GraFixBD