Contract mixed up.

I upgraded on 22 January 2021 to samsung s21 ultra at Mtn store boksburg. The lady that assisted me was Lutendo. I asked for the Mega talk xs package and even showed her a screenshot of the package I want. then my contract revived and it was put on Mega gigs xs that I do not need. I phoned her and informed her but nothing gets done. This was her mistake and not mine. I just want the correct package which I asked for. I am not going to pay 24 months for data where I have data everywhere. i need the mega talk xs package with the 100minutes liked asked for. Can someone please assist?