SERVICE ??? WHAT SERVICE ????????? Can some one please explain

My daughter uses cell c because of the supposedly good whatsup deal of R12 for n whatsup bundle for a month. On 2 Oct 2017 my husbund gifted her with a R12 whatsup bundle and believe it or not her whatsup bundle is not active anymore as she reached her limit ??? 8 days realy ??? When i called cell c service centre asking for help regarding this the lady told me it is because of all the pictures and videos she is watching. The more i tell her my daughter phone gives problems downloading videos and pictures therefore she does not watched videos and very little pictures where i myself which uses the same R12 bundle watched videos and allot of pictures daily and still have a active bundle the more she says " I DEPENDS ON HOW MUCH PICTURES AND VIDEOS SHE IS DOWNLOADING WHAT PART OF SHE CANNOT DOWNLOAD THEM DUE TO A PHONE PROBLEM DOES SHE NOT UNDERSTAND ?????????????? Also i informed her that my daughter only used whats up after 14:00 normally as she is in school Where after can you believe it she wanted to transfer me to someone whom can assist me with the downloading problem???????? That after i said its not the downloading that bother me it is the fact that something we bought that should have been for a month lasted only 8 days ??????????

Can some one please explain