Rang but never left a message. I don’t numbers that I dont know back, especially if they don’t leave a message

my phone automatically called it 'spam' so I did not answer it

Didn’t leave a message. Blocked.

Called saying they were from the security department of Mastercard. Beeped for call from overseas after calling from Sydney number, asian sounding voice

Wanted to discuss Visa card and Mastercard. I hung up on her as it sounded like a scam