harassment for personal information

I have two loans with African bank which fell in to arrears as I was between jobs. However we agreed on an acceptable amount which I honour every month for the past year and a half. <br> <br> I have been receiving prank calls with regards to people claiming to be from financial institutions that require my personal information. <br> <br> when african bank called me in March requesting my I.d number I refused as I was afraid of giving out this information.<br> <br> eversince then Africa bank harasses me for no valid reason. In April the call centre agent bluntly asked me why had I made payment yet it was done. I had emailed the supervisor at the time requesting his assistance with the service I received but only when I refused to give information this morning was I told that the supervisor would speak to me which I declined. <br> <br> I do admit that my account is in arrears but I honour payment every month which both african bank and I have proof of. but that should be no reason for me to be treated in that manner. <br> <br> All calls are recorded so information will be made available by african bank <br>