I called back number (02) 8364 5188 reached voice mail but did not say for what company.

Never leaves a message or won't say who they are but want your information first.

Caller: COH group

They rang 3 .times, i called back, the gentlemen said he was from COH group (Debt collection, Hardship management, Credit management)
Somehow had my number, just ask to be removed from the list

Probably Lion Finance, they have hundreds of numbers beginning with 02836451/2

I called back number (02) 8364 5188 spoke to a woman but did not say for what company.