Bad customer service from mtn

I did a online upgrade on the 9th March 2022 and the upgrade was put as mtn home data instead of the mtn on the go. The package was delivered on the 12th of March2022. We were told to hand the laptop and the router to a mtn direct store which we did do on the 20th March 2022 at the Sandton city branch. Since then they have blocked my Sim for almost 2 weeks now and also the data that I bought on the 13th March 2022. I paid cash for 20 gig and still had 13 gig left when they blocked the Sim card. I have been battling to get them to correct this now. my number for the contract data is *** and calls can reach me on ***. Mtn Meadow has also been trying to correct this with no satisfaction.