Bangalore University — Affiliation letter not received

I'm an alumni of at. Joseph s college of Arts and Science awaiting my affiliation letter for important verification purposes. I have submitted all details by jul 14th. It's been 4 weeks now and I have not heard back. On calling I'm asked to call different departments and no one has an answers. This is very bad when it future depends on these letters and the BU start just take advantage of.