Karnataka State Open University — provisional & convocation certificate not received

Address: Krishna, Andhra Pradesh, 521215

Dear sir/madam,
I have submitted my convocation application along with complete documentation on 11/2016 and fees also paid rupees 1000/-. But till date (10/10/2017) the convocation certificate not been received from the university. And i didn't got provisional certificate also. After 10days i have hr round in one mnc organisation. I have to submit atleast provisional certificate. So please organize to let me know status. I have called multiple times to university and no reply from them.
Name : kotireddy a
Course passed : btech in electronics and telecommunication
Joining year : 2012
Passed out year : 2015
University : karnataka state open university
Branch : poonamallee (Chennai)
Enrolment no : 11772lbet0210
Email id : koti. [protected]@gmail.com
Ph. No : [protected]