MTN ***** department not answering their phones

I recently had the misfortune of being ****med by someone who claimed to be calling from MTN. I was lucky that not much was taken, however I decided to call MTN (809) and report the issue. I explained to the Customer Service Rep there what had happened and she advised me to contact the MTN ***** Dept. on 1 of the following 2 numbers: ********** or ********** This is where my headaches began: The 1st number rang incessantly until it cut off (automatically?). I retried several times. I then tried the 2nd number which remained (and still remains) engaged. In total, I have call one of those numbers at least 22 times in the last 3 hours – without a response. I would have thought that preventing ***** would be of a primary consideration of such a large corporate, but clearly I am/was mistaken. I am disappointed by this lack of service.