Data disappearing and bad costumer care

I have a problem with Data disappearing from my contract since the 1st of March. The mobile data on the phone is switched off and the data just keeps getting less. I have lost more than 2.5GB in one day and that includes midnight data even if I was not even awake!! The mobile data on the phone was switched off permanently. I went in store to report it and they could not help me and the case was escalated on Saturday the 3rd of March. I was told that it will be sorted out within 24 to 48 hours at which point I had them block the number. When I phoned Costumer Care on Monday the 5th to find out the progress I was told they have only started on Monday and it will take 1 to 2 working days. I called on Thursday the 8th and I was told that they are not done yet because Data validation takes longer. At this stage it is already after the time I was told it will be sorted out and the first I hear that data validation takes longer than normal inquiries. I called costumer care today again which is the 14th and 11 days after I reported it, and I was told that they only finished it on the 13th. While I was on the phone they e-mailed me the validation report. I opened it and saw that the validation report is for February and not March and thus does not help me in the slightest. After I told the Lady that it will not help me and I need the one for March, she said that the one for March can only be done in April and I should phone the technical department to see if they can help me do the validation early. The other problem is that even if it was the right month's validation, it still would not have solved the problem of data disappearing. Now I still don't have an answer to the data problem and I still can't use the data and as usual I have no answer to the problem.