Reciprocity @ MindSay

1. To give or take mutually; interchange.
2. To show, feel, or give in response or return.
   

re-ci-pro-ci-ty /n/ -

1. A reciprocal condition or relationship.
2. A mutual or cooperative interchange of favors or privileges, especially the exchange of rights or privileges of trade between nations

A simple concept, but so hard to come by. Why is this so?

with-draw -/v/

1. 1. To take back or away; remove.
   2. To remove (money) from an account.
   3. To turn away (one's gaze, for example).
   4. To draw aside: withdrew the curtain.
2. 1. To remove from consideration or participation: withdrew her application; withdrew his son from the race.
   2. To recall or retract: withdrew the accusation.

VERB:
intr.

1. 1. To move or draw back; retire.
   2. To retreat from a battlefield.
2. 1. To remove oneself from active participation: withdrew from the competition.
   2. To become detached from social or emotional involvement.

When reciprocation from one party is not adequate or in some cases isn't being done at all, withdrawl  may be necessary. After all you should get what you give right?