ungrateful – adj. not feeling or showing thanks for favors, help, gifts, etc.

unappreciative – adj. not giving recognition or thanks for something

rude – adj. not having or showing concern or respect for the rights and feelings of other people : not polite

gardener – n. one who spends time cultivating plants and tending a garden for pleasure or recreation

client – n. a person who uses the professional advice or services of another

word-of-mouth – adj. oral communication

show someone the door – slang expression to rid of someone quickly and without concern