Employment letter from HR or your immediate supervisor?

Also if you have the email from the HR refusing you to give you the detailed letter - attach that as well.

Will this 3 things be sufficient. My question was is my old letter valid?

Also add, as many supporting documents as possible, like payslips, tax return etc. All these combined should be ok. But do take a second opinion.

Yes, the three letters would be sufficient. You may also add the last 3 pay stubs from that employer to prove that you were working there.

hello, can I get employment letter from hr specialist? or should that be person be a manager? thanx

The HR may issue the letter but make sure it has everything and is issued on the company’s letterhead.