I call it both.
Latin Americans get so mad when you refer to the US as America

The US learns the seven-continent system while most of Latin America learns the six-continent system (North and South America are just
América, aka
the Americas in the US).
I just find it funny how they try to tell us what the name of our country is

No one complains that the United Mexican States is just called Mexico or that the Republic of Columbia is simply called Colombia, etc. Calling the United States of America simply America is the exact same
In English, America = the US = United States. It may be different in Spanish (and it is), but we're talking about how it's said in English on here.