Where is customer support number or email?

I guess since it was bought my Amazon they want to make it almost impossible to find a way to talk to a person. It's time for my annual renewal and my credit card was declined and I try to put it in again and it's not taking my credit card. It says "Credit card not updated try another card" or something. Of course no contact us button. Screw it! This is very irritating. I want to talk to someone. Geeeezzzzz.