Annoying Trace Companies

I have to say I am very happy with African Bank Services but this tracing company phoning me all the time when I have already made my arrangements with African Bank is frustrating. I am not willing to assist them with my personal details. I have made my arrangements with African Bank and that is it. Please African Bank get the tracing companies to stop phoning me. My arrangements is with you. I will not take their calls. I feel uncomfortable.