WCA Subscriber Services. Just call the number; they won't answer. Then listen to the options and there is an option to cancel the phone calls. Otherwise, every time you answer their call they enter you into some BS giveaway or something. They explain it all when you call them.

asking to confirm address

I doubt that this is the National Park Conservation Association. As this is not shown as their phone number on their web site or other places. It is Probably a finder for credit cards or like.

On-line says this is Western Steel Building in Littlefield, TX. They called my office, I answered and they hung up.

multiple calls no message.

I have had 9 phone calls from this number in the past 7 days -- including one Sunday morning at 10:40 am. I know why they are calling but I still consider it harassment; calliing me repeatedly is not going to allow me to pay them any faster, nor is it likely to make me more likely to choose them to pay first.

I get at least one call a day, sometimes two, with no message; and they hang up when I answered one time. I don't answer it any more. How do we stop this?

This number is calling me at work at a federal agency. Numerous times a day

Received a similar call. Same phone number. Saying my card with state union has been cancelled because of use by a third party. Asked me to press 1, which I didn't.

foward me to a guy named Rudy and asked for personal info