I called back number (03) 9761 9468 rang once then goes to busy tone.

I have been getting a lot of calls from this number 9761 9468 for a while now. I never answered them as they were frantically calling me every day. I didn't recognize the number, so I knew that it could not be good. Tonight I got a call from the same number again, I answered to see why I'm getting the number. A guy ( with an Indian accent) said he was from Forex. I said I was not interested. Then he continued to talk where I then said I am not interested in whatever you have to offer and please take my number off of your database. He said ok and hang up. this number is not a registered business number. I think he is a scam.