Have no other gods besides Me

Though the Holy Scriptures are very clear we should not worship more than one god, many Christians also do not hold themselves to the 10 commandants and do not listen to the one they are so called following, Jesus Christ. Besides God the Father lots of Christians do have a god son and a god spirit, making an idol of a tri-une god like so many other peoples in ancient times also worshipped three-headed gods. (so what is the difference between those Christians and those peoples who they call polytheists?)