HARASSING CALLS FOR THE WRONG PERSON

Again have i received a call from this institution looking for an individual unknown to me, and this on my cell nr issued to me by MTN in 1999. Their unprofessional staff do not give you an opportunity to EXPLAIN why they cannot speak to the Kleinhans person that they're looking for, they rather just drop the call. I have told the last caller from *** to REMOVE my cell nr from this individual's record that they're looking for AND send them a mail via their website. I will NOT stand for being harassed for someone else that they're looking for. Blocking the nrs do not help as they keep on phoning you from different nrs. Their staff have hearing problems which means they're in the wrong profession!! One more call will result in further action taken!!!!!!!