Do fooled by a 30-day money back?

I bought grimefight program failed. Technical support could not help. I sent a lot of email spoofing does not respond to a 30-day money back?

There is an on-line contact form, http://www.avast.com/contact-form.php?loadStyles: Use that to contact Sales and request a refund - give as much information as you can, date of purchase, where purchased, payment method, email address used and any receipt/invoice/reference number.