Kinda a straw man argument* but yes, quite easily. Phone lines would be busier, probability of the technique being successful would decrease. I don’t consider a phone call to be a fight, more like “never hurts to ask, the worst they can do is say no”.

(* “A straw man fallacy (sometimes written as strawman) is the informal fallacy of refuting an argument different from the one actually under discussion, while not recognizing or acknowledging the distinction. … The typical straw man argument creates the illusion of having refuted or defeated an opponent's proposition through the covert replacement of it with a different proposition …)