Vodacom thinks we are braindead.*****ing data

Got a Data contract with them..Always get thoug a month with +- 200G..Just watching Tv and mails..This month loaded on the 15th 350g and on the 24 debit went off with an exstra 100 g now the tell me my data is finished..Steeling your data is in their system..think every one is braindead and take this ****..And no one can do anything about it..worst network..