Videoblocks Cancelled Trial - They charged my card twice and won't refund Internet

I signed up for a free trial on October 14, 2016.  I contacted the company through their help button on their website on October 19, 2016 to ask that the trial be cancelled and the account closed.

In December 2016, I noticed that my credit card had been charged twice for $79.00.  I contacted the company agian through their help button and they sent me an email asking for more details.  Through several emails, they have given me the runaround and have not cancelled the account nor have they made the refund.  

On December 14, 2016, I gave them until close of business today (December 15, 2016) to cancel the account and refund my money.  They did not reply.  I filed a complaint with the BBB in Reston, VA and have filed this complaint here.  Next, I will contact my bank tomorrow to dispute the charges and I will find as many other places as possible to file complaints against the compamy.  I may even go the the NAB convention next year to stand at their booth and tell people about my experiences.

To the company... Refund my money.  All of it.  Now