Bangalore University — I'm complaining for fees amount deducted twice

I'm a student of bangalore university and I have paid the fees for 2nd sem bba examination. The amount has been deducted twice from my 2 bank accounts. One was saying transaction failed but the fees got deducted that I noticed later so at that time I paid from different bank account which said transaction successful.T he transaction from bank of baroda was successful but transaction from union bank was showing unsuccessful still the amount got deducted. l have been calling and mailing them from more than one month as I have paid the fees on 2/9/2021, no one picked up any call and no replies as well after voicemails. I'll share the screenshots at the last and my roll no. Is 202FC26008. Kindly refund the additional amount.