Lazy staff at MTN greenstone giving wrong info

MTN Greenstone gave me incorrect info twice when calling them to get assistance with a 2nd simcard on contract. First time I called I asked how do I activate Sim and lady advised I must put Sim in and contract airtime and data will be shared between 2 Sims while in separate phones. I asked how to see what cell number was and she impatiently told me that i must call a Someone the get the number. This was not true and didn't work because she just wanted to get me off the phone. 2nd time I called to inform them I can't make calls and still don't know the number, I was told by this lady that I don't have link on calls, only linked on data with contract to the other number. Data still not working I then went to the shop and explained my case to a counter sales person without any energy or lus for anyone. Queeus in store but open counter where she sits doing nothing. I ask her to go onto system to see my account but she says no I must explain first. After explaining again to the 2nd person after the door person, she goes onto system. She then tells me after asking me to remove Sim and me dropping ny phone because I don't have a counter to support thus function. After all this, she says that the contract original number must share data and it's not automatic.