Important point. If someone claims there's a god. The burden of proof is on them.
We have (for want of a better word) a belief system based on logic. Religious people do not. One of the logical maxims we use is Occam's razor. ie. If you hear hoofs outside, think horses over zebras. Now that does not mean zebras are impossible, just highly unlikely, so a higher degree of proof would be required. God botherers hear unicorns.