Why do you keep on sendning me sms even after I phoned you to remove it, why

I have previously phoned you to remove my number which you only removed for few days as thereafter you continued sending me threatening sms under FNB account *** and Vodacom account, which you say am in arrears and should pay immediately. I don't know what is your story for you to keep my numbers and keep on sending me sms even after you were notified that theses accounts are not mine, I am really disappointed, I thought you were supposed to be legal practitioners who promotes law not ********, as you are acting like one, how do you keep on sending the same person sms even after I phoned you, what is that,very disappointing, how you are harassing me for nothing.