I regret my MTN order

I purchased a mifi router and month to month sim card from MTN online and paid R548 on 23 August 2024. After a lot of back and forth with DSV trying to get my order, the driver finally delivered the package on 3rd attempt because they wanted an OTP i never received and MTN was saying they dont know anything about OTP for delivery and that they could not find anything under my ID numbers. Now i received the package but on the invoice it states i purchased a router only, with a prepaid SIM. Nothing about my 20G month to month data that i paid for with the router.

I called MTN many times and sent emails but they keep referring me back to DSV and DSV says they cant change the numbers they put on my ID number if MTN doesn’t ask them to.

Question is why is my ID number some 7 digit number no one is able to figure out where it comes from? Why is my invoice different from what i actually paid for, even the router i ordered was white but i received a yellow one.

I was supposed to give this to my son as a birthday gift and it’s ruined now. This is the worst service I've ever received from both DSV and MTN. If it cant be resolved then send my money back!