Called my work mobile.  No message left.  I called back and the number rings busy until it ends

Called & did not leave a message.

Just got this call

Just received a call from this number. I answered the phone, saying my first and last name, and the woman on the other end said, "Hello? Is Daniel there?" I said, "This is he." She said, again, and in the same voice/tone, "Is Daniel there?" I, again, said, "This is he," and she hung up.

I have a feeling it was a robo call because the woman's voice and tone were identical in the words she was saying each time. I think I confused the system by saying "This is he" instead of repeating my name again.

Asked if they could get a donation for Breast cancer