Ackermans is this how you treat your customers????

So my husband receives a call from a lady named zanele that works for Ackermans***. This lady calls in about the delayed payment that was supposed to be made by my husband, when he tried to answer and tell him the reason for the late payment this lady starts shouting at my husband to pay the account, hubby tries to calm her down so they could have a civil conversation, the lady ended telling my husband to hang up the call, this lady kept on screaming at my husband as if his a kid...