Why was my credit card charged two identical charges on the same day? ONly one order!

I received two identical credit charges on March 11, 2017?  It should have been just one payment for a renewal of services.

Hello Mary,
We are sorry to hear that. We see from your record that you have been charged twice for the renewal of AVG Internet Security unlimited. If you are not using this product, you can request for refund for one of the order from this link https://support.avg.com/RefundForm and you will soon be contacted by the refund team through email.
Thank you

Hello Mary,
We are sorry to hear that. We see from your record that you have been charged twice for the renewal of AVG Internet Security unlimited. If you are not using this product, you can request for refund for one of the order from this link https://support.avg.com/RefundForm and you will soon be contacted by the refund team through email.
Thank you