My bill is unexplained

Hello William,
My apologies for any inconvenience caused. I have sent you an email, please reply to my email with the requested information to assist you further.
Best regards,
Alok.

My latest bill to my credit card was 70.32 from DRI* AVG Tech 9529084089MN. That is an unfamiliar amount of money and I have been with you for years. What is happening? What is the extra charge for?
Please explain, lower the charge or you will lose my business. Bill Heuisler

Hello William,
My apologies for any inconvenience caused. I have sent you an email, please reply to my email with the requested information to assist you further.
Best regards,
Alok.