When is enough enough?

Please tell me why I cannot buy just one coverage instead of all thes bit programs ?
I am considering canceling all of AVG due to the constant barage of subscription warnings and changes and additions to coverage and more and more charges. My computer runs slowly when AVG wants more and faster as soon as I buy another subscriptionthat is promising the same thing, protection, as all the others.
I am really ticked.
Is any one else?
PSS. Why cant I talk to a real person about all of this?
*Note Please do not post Personally Identifiable Information like email address, personal phone number, physical home address, product key etc.