Unauthorized purchase on my cheque card

I received a massage from FNB yesteday at around 9:53 that a purchase of R4092.53 was done on my cheque card , i called the ***** department a lady which i don't remember her name because i was stressed blocked a card for me and sent me some form that i must feel in and return to them, she also told me the transaction was done in mauritius while im in South Africa, did all that then another unathorised debit order or R730 went through my account. went to the Randburg branch was assisted by a guy, i explain to him all my frustrations and he only reversed the R730 and he told me he cant assist with that ill have to wait. called the call center again and the say the recieved the forms but it will take 10 working days, what must i do at the moment, I don't have a card nore my money.