Router *****

I bought a router with a data package of 130G and the price is R365, however, to my surprise they only loadeded 50G meaning that had I not checked they would have ****** me, I went to the branch they say that they changed my package without my knowledge and they are failing to answer why, MTN is a *****. I'm still paying the same amount with less data, they are failing to fix it! #MTNISA*****!!!!