Incorrect package, data and airtime being loaded

I have been with MTN for just over 2 years now. As my contract expired in August of this year I started with a contract as an MTN my choice 200. This had R100 of airtime, 200 SMS and 500mbs of data. This has not changed for 2.5 years. This month however I have been informed that this is not the case and that it should only be 200mbs of data but I have been receiving this package and essentially what I signed for in 2015.

Essentially I expect to see 500bs of data and this is not being loaded. Further to this my package does not have a stop : in that as I use data or airtime over my limit it is meant to continue and charge me as I go along, this was again not the case

Please can someone explain!

********** Mr G R Cohen