Rude Telemarketing call

I had an MTN Telesales call on 29 July at 15:06. Having a Cell C account already and being very happy, I politely told the young lady that to not waste her and my time, I am not interested. To which she just cut the call! No thank you, no goodbye - ZIP! Well MTN you can take whatever future promotions you have and shove it where the sun don't shine! You have the "*****" to call me and interrupt my day, but don't have the courtesy to be polite!