Caller: The caller hung up, on consecutive occasions

The caller hung up, on 2 occasions, & didn't announce themselves to my Telstra Call Guardian......based on that, it is most definitely a suspect caller.....a Scammer.....using this Spoofed Caller ID to manipulate the number so that the call appears to be coming from a well-known phone number (FEDEX), making it more likely to be trusted or answered......it has earned a place on my permanently blocked list in my Telstra Call Guardian MKII.....it will never bother me again.....period.