HDFC Bank — UAN not generated

Dear Team,

I was working in HDFC bank for 2.3 years, my employee code is S40704 my UAN number is still not generated. I am facing problem for my next career opportunity.
I had contacted with HDFC HR regarding the same but it is of no use. All she says is HDFC organization does not generate any UAN for any of the employees. Even PF Office confirmed that it will be given by the first employer. As UAN is mandatory for every organization kindly help me in this.