MTN data goes missing showing as usage when connection is not used heavily.

Below is a list of data usage that makes absolutely no sense whatsoever. Not the first time MTN has cheated us out of data. There is no ways that my wife with only her 2 mobile devices on that connection uses uses 92 Gigs in 2 days on the 1st and 2nd of April 2020.

She is the only one on that connection, as i am on Vodacom. Her tablet is also on its own data package of 20gigs day 20gigs night. That is used for business and she does not exceed the data on there. Someone explain how that much is used in 2 days. because she does not. MTN, you need to credit that data, because this is not the first time this has happened. Date of usage Usage in GB 2020-03-31 0.15 2020-04-01 61.21 2020-04-02 31.26 2020-04-03 12.53 2020-04-04 4.57 2020-04-05 2.75 2020-04-06 17.61