OLD MUTUAL SAYS THEY HAVE THE RIGHT TO HARASS

Old mutual is harassing me each and every day....... I am on maternity leave and app**** for uif 3 weeks before my due date as you cant do it before 3 weeks before your babies due date. I am still awaiting payment from them and it has been 2 months today. Old Mutual Finance has been harassing me as from a month after I went on maternity leave. They said I must send them the proof of uif medical certificate and a proof that I dont get paid while on maternity leave through to ********** 963 on old mutuals whatsup number(I stll have the proof) they also confirmed that is recieved in the next day they phoned me again. I made a arrangement for R250 per month until I go back to work. Old mutual is calling me each and everyday. Why if I made a arrangment are this people calling me everyday asking for more money. Today the lady says to me "We are allowed to harass you everyday." I need this to be sorted out please. I also said to her they can call me once a month to make next arrangement. I have never heard that OLD MUTUAL have the right to harass you for money. At least I made an arrangent.