They ring and hang up

(02) 8986 8348 - Macquarie Card Services Collection Department

this number called at 8am!!! I tried to call back but always engaged.
how can we stop this?

Calls numerous times every damn day. Never leaves a message.

I answer they hang up. I call back the lines busy

(02) 8986 8348 Has been calling me too. I blocked the number as when I answer it just hangs up. But since I blocked the number, I get calls from a different number now

This number has been calling me several times a day since march the 2nd when I call back it rings then goes to the busy tone. They have been calling morning afternoon and night

I called back number (02) 8986 8348 rang 5 times then goes to busy tone.