No he is doing what he said he would do, but not in the way he said he would.
Yes, he's building a wall...but the American taxpayer is paying for it, it will cost anywhere upto 4-5 times what he said it would cost, and he has no sensible way of making Mexico pay for it.
Yes, he is banning Muslims, but not from majority Muslim countries that he does business with.
He promised a lot, but is peddling snake oil all the while.