being treated like a ********

On the 20th November MTN approved my second contract that I app**** online and they send through the parcel via DSV Mounties , on the 23rd the lady from DSV Mounties called and she asked me security question when she came to the part of the address I told her that I registered the a delivery address a different one instead of home address she insisted on me giving her the residential address I gave her my previous address of which when I took the contract last year with MTN used that one and I explained that I have a new address of which I gave her she told me that I must update my residential address and dropped the call without even telling Me what was the purpose of the call she asked me personal information without the decency of telling me why is she calling me how sure am I that she’s from DSV Mounties and on the 27th I called DSV Mounties to find out what’s happening with my parcel I was told that it was sent back because I failed to answer security questions , I’m being treated like a ******** because the lady didn’t ask the right question on the address I wrote the work address were I want the parcel to be delivered she thinks that I stay at the work address and when she asked for the residential address I told her that I didn’t put residential address for delivery she insisted that she wants the residential address