Cash deposit

On the 10th of March I tried to deposit cash into my card via ATM. The ATM took my money without depositing it into my account. I went into the branch to log a dispute. I explained to them that the cash was my ONLY money for the rest of the month. They said they can't give me cash back but the money will be in my account in 24-48hrs. On the 11th of March I received a notification saying my dispute is delayed. I immediately phones the call center because I urgently needed the money. I spoke to someone in the call center and it doesn't matter what my question was, her very blunt answer is "7 - 14 days". I am disgusted with this situation. It is not my fault but they don't care that my bank account has been empty for the last week without any assistance from Fnb. It doesn't matter how many times I try to follow up, they just transfer me to another "representative"... When will this be resolved?