Double billed on 6-29-2017

Hello Carroll,
I see that you have paid twice for AVG Internet Security licenses. We can merge the both licenses into one (expiry date of new license will be extended) or you can request a refund for one license.
Please respond with your choice to assist you further.

why was i double billed $ 55.24 on 6-29-2017?  ref 01522803205

Hello Carroll,
I see that you have paid twice for AVG Internet Security licenses. We can merge the both licenses into one (expiry date of new license will be extended) or you can request a refund for one license.
Please respond with your choice to assist you further.