Pusher Backer
A person or group that will do anything not to take responsibility by any means possible. Other characteristics are asleep on the job, procrastinating, neglectful, unconcerned, indifferent, dilatory, inattentive, careless, unready, unpersevering, lethargic, lifeless, and lackadaisical.
Those customer service reps are such pusher backers, that you might as well not call at all.