**** online purchase

Im a widow and I survive by disability and child support grant of which is being deposited to my Nedbank account. Wednesday 6th of August I received the money as per usual on the 7th as was preparing to go to the nearest mall to purchase food for kids i received an sms of an online purchase that took all the money from the account i immediately called Nedbank to notify them of what just happened they told me that they will investigate and get back to me, as im writing this im so angry as to why is it taking so long to be solved, i dint widraw in any ATM, but I usually go to a grocery store purchase and ask for a cashback for safety reasons. So im so dissatisfied and dissapointed of what happened and I really blame the bank for this our monies should be safe in banks not all this. My question is what im i suppose to do in the meantime the youngest is in a diaper there's no food at home there's nothing, please be considerate about this is the only income I get to survive and make ends meet.