Wipro — Urgent help required for separation related issues

After my resignation acceptance, my myWipro portal access and Wipro mail access were suddenly revoked so I could not download my latest payslips or PF statement. As a result I do not have my EPF account number and UAN now, and even after repeated mails to the concerned people in the company, I am not getting any help. It has been around 2 months now and I still don't have the UAN and EPF number, no pay slips for last 3/6 months which I am supposed to get. To make the situation worse, I cannot access the Alumni portal, every time I login, it redirects me to the sign up page, as a result I have never been able to login into the alumni portal. Please help me get the UAN and EPF and EPS account number urgently and also access to the alumni portal.