MTN DISAPPOINTS

I am very disappointed with MTN Network, this morning around 6 i bought 100MB data of Whatsapp social bundle and also won 50MB on top, all in all it was 150 MB, I logged in on whatsapp but that was for less than 15 minutes as i was preparing for work. Around 07:52 i logged in again as i was leaving the house but to my surprise i received a message from MTN saying i have consumed 100% of my data bundle. I called MTN again and the lady i spoke was so nice and she advised me to call after 2 hours as it was not updated on their system at that time, i called now @10:25 and was assisted by a rude lady who told me that my whatsapp consumed the Datas whereas i can load 100MB and it can last me for a week. I need my DATA back or MTN must just explain what happened, i am starting to believe what everyone is saying about MTN. I have never been on any network except MTN for the past 13 years i have been a faithful customer for all those years to be ********** like that.