It looks like it has been close to a month since it was posted on your credit card. The credit card company wants you to do all you can to work this out with the company before they start the process and sending 3 emails with no reply and waiting a month seems like that's about all you could do at this point. I would start a charge back now. If the company can't prove that merchandise was shipped and you received then it will be charged back. Good luck.