short·change 
/ˈʃoɚtˈtʃeɪnʤ/ verb
short·chang·es; short·changed; short·chang·ing /ˈʃoɚtˈtʃeɪnʤ/ verb [+ obj] 1 : to give (someone) less than the correct amount of change
▪ The cashier shortchanged me. I gave her 10 dollars to pay for an $8.95 book, and she only gave me a dollar back. 2 : to give (someone) less than what is expected or deserved
▪ The band shortchanged its fans by playing for only 30 minutes. — often used as (be) shortchanged ▪ He was shortchanged [=was cheated] out of a promotion (by the company). ▪ Many people felt they were being shortchanged by the policy. = Many people felt shortchanged by the policy.
▪ The cashier shortchanged me. I gave her 10 dollars to pay for an $8.95 book, and she only gave me a dollar back.
▪ The band shortchanged its fans by playing for only 30 minutes. — often used as (be) shortchanged ▪ He was shortchanged [=was cheated] out of a promotion (by the company). ▪ Many people felt they were being shortchanged by the policy. = Many people felt shortchanged by the policy.
