No message left so probably spam/scam

Caller: Called, few times no message left annoying

Called, few times no message left annoying

I answered but there were only call centre sounds. Hung up after 5 seconds.

Caller: Scam

Scammers

Flagged as suspected spam, I didn't answer and no message was left.

no message left, seems typical scammer/spammer number (0480xxxxx)

Caller: a**holes?

Answered but they hung up, never say anything if you do not recognise the number as they can record your voice and use it on voice recognition services to scam you!