Upselling to my kids as well??!

A call centre agent has been calling EVERY NUMBER listed under my profile (I have 3 contracts and 3 prepaid numbers with Telkom Mobile) with what i can assume are promotions/telemarketing. On one occasion, my mother brought her phone to me after receiving 3 calls in 1 day so I could respond to the agent. I told her the main number and asked her to call on that number. No call was made. 2 days later, my baby sister asks me if i received a call from Telkom as she told them I was the contract holder. Why should every number under 1 person's name be contacted for promotions? Surely it is irresponsible to be asking a 16 yrs old to buy from you guys? Do you not even ask any security questions before going into long pitches to sell, sell, sell?