shortchange
US /ˌʃɔːrtˈtʃeɪndʒ/
UK /ˌʃɔːrtˈtʃeɪndʒ/

1.
to give someone less than the correct amount of money when they are due to receive change
:
•
The cashier accidentally shortchanged me by five dollars.
•
Make sure to count your change so you don't get shortchanged.
2.
to treat someone unfairly by depriving them of something they deserve
:
•
The company shortchanged its employees on benefits.
•
Don't let anyone shortchange you of your dreams.