Chnging from one company to another

My virus protection plan ends on 3rd August with another company - how do I change over to your Pro cover please.

Hello Wendy,
Thank you for your interest in AVG.
Once the subscription of the other product ends, you can purchase and install the AVG program from online web site or you can contact our AVG technical team, they will assist you with the installation of AVG Protection in your computer. http://avgclick.me/AVGtechnical
Thank you.
Karthikeyan, AVG Customer Care