Scam I'm a 15 year old boy and yet they call me about tax return

(02) 8488 3137 is a company called taxback.com, they do tax returns, tell them you're not interested and they'll remove you from their list

I received a call from this number to my United States mobile phone. Yes, I am a dual citizen, but how did they get my number, my U.S. number? Don't like it at all. They didn't leave a message. I think if they are legitimate, they would at least leave a message. I won't be calling them back or answering the phone should they decide to continue to call.

I also received a call from this number and dont have a clue as to how they received my information

spam

I called back number (02) 8488 3137 spoke to a woman who said company name is taxback.com they help in getting tax refund as what the woman said.

This company called me pretending that they were a company called taxback.com however a few months earlier they rang offering debt solutions. If they are a bad credit collections company, please just be up front about who they are. I rang them back and insisted the organisation remove my number from their records and not to call me again. I will go further and report it to the telephone ombudsmen as the way they try to obtain your personal information is not only unethical, it is predatory.

I called back number (02) 8488 3137 spoke to a female agent.
She said she is from taxback.com and was asking if we need help regarding tax returns.
She was asking for private information like my date of birth.