Call your bank or credit union immediately, so they can suspend your account. The appropriate telephone number should be on the back of your ATM or credit card, or on an account statement. Alternatively, you can look up the correct number in the phone book. DO NOT contact the company using details that appear in emails or on websites that you are suspicious of – they will probably be fake and lead to a scammer.
You should also report it to Crime Stoppers on 1800 333 000.
Chances are the virus or other malicious software is still on your computer. You should run a full system check using a reliable virus checker. If you do not already have this software and other protections like a firewall installed on your computer, you should do so (a software professional can help you decide what is best).
The scammers may have gained access to your online passwords so after you have cleaned up your computer, you should change these as well.
Call your telephone company and let them know what has happened. You may also wish to contact the Telecommunications Industry Ombudsman (TIO) for information and advice.