I missed a call from this number and then tried to call back multiple times but it rings out or engaged

I am so tired of unsolicited calls I do not pick up a call unless I recognize the number. I just let a call from this number go to message bank and caller hung up without leaving message. After checking number here I will now put the number in "blocked calls".

hung up when I answered with our business name

29 January 2019 phoned I picked up they hung up this repeated 12 times now in call blocker app

some Indian asking about my internet

Didn't leave a message on my mobile. I am on the Do not call register.

An Indian sounding man asking about my home internet. I don’t have home internet.

Friday 25/01/19 15:00 They said it was Telstra about me saying they could see I was having problems downloading something - but when I told them I was not with Telstra and then asked them who they were calling from, they hung up.

Rings our business number on regular basis with no answer also some mobiles

Telstra scam

Caller: Scammers (Telstra)

Telling me I have problems with a server only they could fix lol I said I was with Optus and they said they own Optus. Idiots

Female from "Telstra" advising that home internet has been compromised then hung up

scam saying they are from telstra

I called back number (03) 5432 0838 rang once then goes to busy tone.