Tell Your U.S. Congressmen What You Think:

​​U.S. Congress has a new automated phone system.

Call (1) 202-224-3121.

An automated voice asks if you want to speak to a Representative or a Senator. You say Representative or Senator. Then you say the name of your choice. 
Select:
U.S. Sen. Thom Tillis
U.S. Sen. Richard Burr
​U.S. Rep. David Rouzer
​​Make 3 calls, all short, all cheap - free on cell phones.