UPI — I am complaining about my phonepe upi transaction

Address:	09,w/n 09 bishanpur jeetwarpur samastipur, Samastipur, Bihar, 800134
Website:	Phone pe

During the payment of my fee in magadh university through pay u biz, i choose phone pe. There without logging in i choosed upi mode, where i put my upi i'd which is of bhim app. I finished my transaction by ussd *99#. My balance is deducted. Phonepe shows this transaction successfully but pay u biz shows it unsuccessful. The process happened twice
The dr no. Of my transactions as shown on sbir net banking is
[protected]
[protected]
The phonepe team had tell me raise a chargeback in this condition