Data *****ing

It has been a year since i complained about Vodacom data *****ing nd now the are not happy I bought 100 mb today for 7 days nd after 2 hours I receive a message to say i have less than 38mb , may I state that i also have 169 watts bundle.Facebook is free mode, background data is restricted on all applications. Vodacom please dont start the nonsense again I hv no streghth to be posting about data pliz...