MLC working for NAB trying to sell you insurance.

I get call repeatedly from this number daily around 12 o clock noon...when ever I pick up, they hang up...but when they hear a female voice, they start saying they are from National Australia Bank etc...seems to be a Prankster number..do not provide any personal details

For weeks, this number has been calling me numerous times a day. When I called the number back, it was just an automated message about marketing.
If its important they talk to me surely they would leave a voicemail.

It is a marketing company regarding MLC products.

I already have an insurance company

Been receiving calls over and over. I didn't say hello for just 3 seconds and they cancel the call.