MTN Online Upgrade - data allocation on MTN app not as per what was advertised online.

Data allocation on MTN app is not as what was advertised online when I selected the contract. Also, according to the MTN app, the 20gig once off data was not assigned as advertised online. Amanda was quite efficient, informative and polite. She reassured me that the data allocation on their system shows that I was assigned the data as advertised online and that the MTN app info was incorrect. I have 10 days to cancel my upgrade if I am not happy with the package given. She assured me that she will contact me once the query is resolved. I trust that the disparty between the two systems will be resolved swiftly as customers rely on the MTN app to monitor their data usage.