Complained of Data and not happy about the duration of a contract

I had a contract with MTN which was for period of 24 months, contract was supposed to expire in October 2022. In June I phone mtn with a purpose of adding another contract for 24 months (laptop) which was for 20gb. I spoke to a consultant and signed a contract for 24 month with a laptop bag. Laptop was delivered early last month but laptop bag was not included.

I phone thier customer service to let them know that a bag was not delivered and that my previous contract with 80gb was now cancelled and I did not say they must cancel it since I was getting 80gb per month (60 day data and 20 night data). What the consultant did is that he cancelled 80gb contract and replaced it with 20gb of a laptop.

I phoned again on the 2nd week of July 2022 to complain about the data since it is not enough especially to share with my family. They then put me through to one of the manager, he agreed on giving me 80 gb (50 day data and 30 night data), payment will at R569 per month.

To date I am still waiting for my data to be added as agreed with the manager for month of July 2022 since they have loaded 20gb. No one came back to about the delays loading 80gb and laptop bag not delivered.

Lastly, I was told that laptop contracts are for 36 months but thier app when applying for a contract it gave me an option to select 24 or 36 months and I selected 24 months and I even communicated this with the consultant when I took the contract.

My bill is sitting at R800plus for this month. Please help me resolve this problem as I am not happy with contract of 20GB. ***