If you have any problem with the software, you can call to clarify your doubts. AVG Customer Service Number USA: +1 855 261 6192. AVG Customer Service Number UK: +44 800 096 7734. AVG Business Support Helpline Number: +44 163 665 8044. With its advanced technology and user friendly software, the company has created a large client base. Now they have millions of customers all around the world.