Based on the provided information, it appears that the caller with the number +61427406065 is likely involved in telemarketing or spam activities, as the caller hangs up when answered, which is a common trait of robocalls. The fact that this is the fifth call in a series of similar calls from mobile numbers suggests a possible automated system. The caller's behavior of hanging up immediately after answering implies a lack of genuine intention to communicate, further supporting the likelihood of unwanted calls.
This is the fifth time i've gotten a call from a mobile number that hangs up when i answer, its annoying