Help Desk

I've had another series of meaningful exchanges with two different IT help desks today. A minor issue soon escalated to a total lack of service, with each help desk sure that the other was at fault. Who do I, the customer, believe? I think I'll go with the flow and just mark this one with the acronym P.I.C.N.I.C (Problem In Chair Not In Computer). So the problem isn't the desk but the chair. But whose chair?