Muthoot — resignation acceptance letter

Address: Green View Park, 2No. Mohishila Colony, Asansol-713303, Burdwan, West Bengal, 713303

I gave resignation on 20th january, 2020 but i didn't received any resignation acceptance letter from ro. Ro staffs are very much arrogant.. Don't know how to behave with the employees.
Name:saikat rajguru
Hutton road branch (3272)
Kolkata ro
Employee code : dm32594
Not getting any help from ro (Regional office) staffs. Kindly help me out. As i have a new company joining.. Without resignation acceptance letter it is not possible to join. My career will be ruined