I don't have a Mac computer I only have one computer I believe it an hp compact desktop

Hi there  
my name i Audrey Duguay 
I'm writing to you today regarding my account for the renewal there at avg for $74.99on the 29th of this month.i don't have a Mac computer i. Not paying for more computers I only have one computer and it's my hp Compaq Presario computer desktop computer.there won't be any money in my account on that day the 29th for the payment.so don't go trying to take money out that won't be there.

Hello Audrey,
I understand your concern. You have AVG Internet Security - Unlimited 60 days trial subscription, which will expire on 2018.5.29, automatic renewal is active for this subscription.
You can install AVG Internet Security on your HP computer. However, you also have option to install it on mac/android devices(It's optional).
May I know if you want to cancel the automatic renewal for your existing AVG Internet Security - Unlimited trial subscription?
Best regards,
Alok.