stalking me

i receive a call from african bank every 5mins, this cannot be right. Even after I told them I'll be going to the branch to make arrangements , I'm still being harresed over their incompitence to borrow cash to an unemployed person. if this pastering persist i will take my case to the ombudsman and request an investigation be done. this behavihour is unexceptable. their constultant are rude, one left me on hold till i hugn up. they are rude.