at someone's beck and call

at (one's) beck and call

Completely compliant or obedient to another person; catering to one's every need. The phrase has a negative connotation. Do you really think I'll do anything you say? I'm not at your beck and call! A: "How can we get to the mall this weekend?" B: "Oh, my sister will take us—she's been at my beck and call ever since I caught her sneaking in past curfew!"
See also: and, beck, call
Farlex Dictionary of Idioms.

at someone's beck and call

Required to comply with someone's requests or commands, as in The boss expects the entire staff to be at his beck and call. The noun beck, now obsolete except in this idiom, meant "a gesture or signal of command, such as a nod or hand movement," whereas call signifies "a vocal summons." Also see dance attendance on.
See also: and, beck, call
The American Heritage® Dictionary of Idioms by Christine Ammer.

at someone's beck and call

always having to be ready to obey someone's orders immediately.
Beck in the sense of ‘a significant gesture of command’ comes from the verb beck , a shortened form of beckon . It is now found mainly in this phrase.
See also: and, beck, call
Farlex Partner Idioms Dictionary
See also:
  • at (one's) beck and call
  • at beck and call
  • at one's beck and call
  • at somebody's beck and call
  • beck
  • be at (one's) beck and call
  • be at someone's beck and call
  • wrap (someone) around (one's) little finger
  • beck and call
  • wrapped around (one's) little finger
References in periodicals archive
"You can walk along a hotel corridor and not hear a phone ringing, the players aren't at someone's beck and call. It is quite a pleasant scenario upstairs.
Football: FANS HIGH AND DRY UNTIL PLANE LEAVES IRANIAN AIRSPACE