From Longman Dictionary of Contemporary Englishbe at somebody’s beck and callbe at somebody’s beck and callOBEYto always be ready to do what someone wants I was tired of being at her beck and call all day long. → beck
Examples from the Corpus
be at somebody’s beck and call• I have never liked to be at anybody's beck and call.• She was always rushing around at her mother's beck and call.• I had to be at his beck and call, night and day. 