If it is an automated system, and you did not type in the amount, the amount showing is probably the correct amt. If, at the end of the transaction you still see the same amount, then it is right. Otherwise finish, then send them an email using the confirmation email they send you.
If you find one, let me know. HAHAHA!
Look for a link that says CONTACT or SUPPORT...
If not, chances are you won't find one. We have basically been replaced with robots or voice actuated systems, but keep looking..."Hope springs eternal"
Were you buying something directly from Google?
Don't forget to hit the ACCEPT button if you are ok w/ the answer...