Lost card *****

I am writing in shock and very concerned about my finances since I am losing around R600 a day from my FNB smart account. On the 28th February I lost my bank card, on the 1st of March went to the bank to cancel the lost card and get a new one. To my surprise from yesterday morning(2:00am)I started getting notifications of transaction happening on my bank account without my knowledge, this was strange because I had my card with me at the time. Went to the bank to lodge a complaint and I was shocked to hear that even when I have cancelled the card 26 days ago someone else can still be able to use my bank account and basically the bank is unable to help me because the cancelled card is being used at the toll gates.This is the case number I lodge with FNB ***** department ***. I reported the matter yesterday and this morning more transactions are still happening, what makes me even more angry is that I literally have no more in this account but these *****ulent activities are being processed to put my account on a negative but should I try to us my account for anything it will decline for insufficient funds. I need urgent help