Scam call, did not leave message and when trying to call back says call cannot be connected. Number blocked

Thanks for this information. I just received a call from the first number you listed (03) 9111 2401 and since reading your post, I have blocked and deleted the number.
In the last few days, I have been receiving an increase in scam calls I have been counting and it's between 5-10 a day. Really ridiculous!!

Many calls from call centres in Melbourne, Perth from a company called OT Capital. Not sure whether the calls are actually from there or not considering that ASIC released a scam warning from the company. Numbers include (but are not limited to (03) 9111 2401, (03) 9088 1345, (03) 9111 2316, (03) 9111 2446, (03) 9111 2403, (03) 9111 2394 (VIC); (08) 6245 0423, (08) 6425 0404, (08) 6365 0483, (08) 6365 0435, (08) 6365 0471 (WA)

Read http://asic.gov.au/about-asic/media-centre/find-a-media-release/2018-releases/18-036mr-asic-obtains-interim-injunctions-and-warns-investors-against-agm-markets-ot-markets-and-ozifin-trade-financial/ for more info.

TEL (03) 9111 2401 & (03) 9111 2394 THEY ARE BECAMING A PAIN, I FILLED MY AUTO REJECT LIST AND THEY STILL KEEP TRYING WHAT PART DO THEY NOT UNDER STAND IF YOU DONT ANSWER I DONT WANT TO TALK TO YOU .. GO AWAY ...

Spam call

They use a range of Melbourne numbers from (03) 9111 2401 up to (03) 9111 2413 but probably more. Not sure if they are actually ringing from Melbourne or just routing calls through there. They are online investment traders - bitcoins and alike.

I called back number (03) 9111 2401 spoke to a woman who said company name is OT capital.