invasion of privacy

I admit I could not pay in full the installment due. Not I receive a call from an agent to make an arrangement to get my account out of areas. However this agent asked me when I get paid which I refused to say. This information is between me and my employer. I was almost bul**** to give this information which I still refused to provide. Next thing I heard was, I will have another agent call me for the same. This is harassment of the highest order. I have already said I will pay the installment at the end of the month. I don't want to be harassed in this way. No creditor has a right to ask this information when making arrangements. The question to be asked id: when will you be able to pay the amount. I am highly disappointed at this conduct