Mtn doing *****?

Good morning. I would like to know since when are customers penalized for their upgrade of contract after they have upgraded their phones after the ellegable to upgrade dates? Is this a new policy of mtn that customers are unaware of? Because by the way it looks I just been ******* by mtn. First of all the package loaded onto my 083 number is not what I wanted. Wrong package was loaded. I wanted mega gig xl and got talk s. Sale person at the shop is trying to correct it. Then my *** same thing happened. Was meant to be mega talk s and got mega talk xs instead. Then on the mtn app the bills are showing as follows. 083 bills is around R2800 and the 071 bill is around R2000. Why is that when I upgraded them both after the ellegable dates? Then I been told by the sale person after I asked him this and his response was it's a system from mtn which came into effect from 1st March. Why was I not told of this before I did the upgrade? This is unacceptable. I feel like I just been de*****ed. And I also have a laptop contract I just took a week ago which is standing at R600 or so. In total this bill for April 2021 looks to be over R5000. That's crazy. I cannot afford this. My budget is R3000. So what happens now? Why am I penalized? Why was I not told about this so called new system until after I upgraded? And will my packages be corrected? Mtn must explain to me about this issues. And I need to know my exact bill for this month. I'm really not a happy customer. And I have been a faithful customer for about 8 years and not I get this. I feel like I been slapped in the face. I also want this so called penalties removed from my bills. To me this looks like *****!!!!