African bank consultants are harassing me

I have made the arrangements of paying extra every month until my areas are covered, what l don't understand is why do the consultants have to call me every month to make one and the same arrangement it does not make sense. This is harassment and they are rude on top of that as if I'm owing them, train your consultants about customer service and not to be rude. I have explaining and requesting them that I must not be called for the one and same thing. I'm tired of this harassment. I'm tired.