Unsolicited call from rude girl on phone

I don't know if it was MTN or some other company that they sold my personal details to. The reason why I think it was a call from a company that is associated with MTN is because this rude girl on the phone who was selling me some product or service I wasn't interested in may have mentioned something about an offer for a phone from MTN. I kept asking this girl because she called me and then spoke to me in Zulu and I kept insisting on whether she was making me a free offer and told her she should answer me with a \Yes or No". I kept insisting because I prevented her from wasting my time with a sales pitch and she didn't give me a response but instead decided to put the phone down.<br> <br> Since I am not sure as to whether this call came from MTN or its associated company. All I can provide is the Durban phone number that this girl called me from at 13h22 at ***."""