Disappointed at MTN SA

I upgraded my MTN line somewhere in February. The application was done online, applying for a Samsung Note10 lite, with MTN made Xtra small for me package. Which was only going to cost me R609 p/m. When i called MTN to check if my upgrade went through, i was told it did not go thorough and i had to do it over a phone. Which i did, applying for the same package.

The upgrade was for my brother, so everything was loaded onto the sim card before the phone was delivered.

i received the phone on the 11th March if i'm not mistaken, and my contract was never even e-mailed. Now yesterday when i looked at March invoice, it says i will be debited something like R1100, i contacted the call centre to ask about this invoice i was told i took a package that give me R1000 airtime.

i need assistance in resolving this because i will not be paying for something i did not agree to.

and i also have some concerns on how the upgrade was done. the consultant gave me an email address where i must send a copy of my id to prove that indeed the owner is the one doing the upgrade, the email never went through, it kept bouncing back. But the upgrade was done anyway without that id copy. Also i received numerous OTPs to authorise the upgrade but could not pick up my phone to give the pin as i was in a meeting, but the upgrade still went through.

i need assistance in resolving this because i will not be paying for something i did not agree to. MTN will have to trace that call between me and that consultant when this upgrade was done. & can i please get a copy of my contract