Refusing to assist me

I called Telkom today on 10213 to verify if our prepaid line is still active and by when should we recharge it to keep it active. I got through to agent Lithemda Ngonyama from the Durban Call Centre in Durban. She refused to assist me because I'm not the account holder. I explained to her that the account is in my mothers name and i am a billing contact person and should be able to make enquireries on her behalf as I have many times in the past. This agent still refused and i asked to speak to a team leader adn after waiting for her for 6 minutes she returns and say all managers are in meetings, the famous call centre agent words. She then said i must call 081180 for assistance and i asked if that is not the Telkom Mobile number and she said no its for customer care. I called the number and again as expected got through to Telkom Mobile and spoke to Jade. Jade then had to transfer me back and the call got cut. What should I do to get the requested info for our account? what should i do about the fact that agent Lithemda Ngonyama was very unhelpful and gave me the wrong info? Please help Telkom