DStv internet

My name makgabee Theresa Lebusa (Mzizi) I'd no *** I got internet with dstv I pay for 25G and on the 1st June allocation was made and 0n the 2nd June they send message that I already used my 50% of allocated data and to my surprise no one was home over the weekend. So how come that my data was already used. Ann's when I ask them they don't even want to answer. I swear that they didn't allocated the correct data. Usually my data takes 3 weeks before depleted by today is the 5th but my daily data is depleted. Can they send a proof to show that they did done correct allocation I can't pay and I'm not satisfied of the service