I am rarely sympathetic to AC's explanations of various customer service failures, but the implication of "an Air Canada employee asked me to breastfeed in the bathroom" is much different if it occurred on a plane (or lounge or airport or any other place that AC has control over) versus in a bizarre, incomprehensible phone interaction (why would a person on the other end of a telephone have any bearing on someone breastfeeding or not?).
To be clear: asking someone who is breastfeeding or seems as though they might breastfeed later to do so privately is NOT acceptable.
But that didn't happen.
A mother initiating an interaction with a corporate employee and asking them an unknown question that is answered by "you can breastfeed in the lavatory", then immediately publicizing that interaction in an ambiguous way shows little except the customer's self-importance.