ACS Skill Assessment : responsibilities details

Hi Team,

I am planning to go for ACS skill re-assessment. My previous organisation have denied to issue such experience letter with responsibilities. In fact, they are saying that only legally approved letters can be provided by HR team and such letters are not approved.
As per other discussions, even for colleague’s notarised reference, i need to show the company’s letter that they do not issue such letters. I am in fix now. Please advise me.

There is no third option as far as we know.