Bank Of Baroda — increased emi of education loan

Address:

Mumbai City, Maharashtra, 400070

Dear sir
I have taken education loan of rs 281000 in 2014 from bob. They didn't have me sanction letter during that time. Also, i have applied for interest subsidy for the loan. During my last disbursement which was in 2016, the sanction officer informed me that there will be 60 emi's of rs 6200 starting from october 2018 and told me to come directly in october 2018 for any further details regarding emi.
And now when i approached bank in order to know the exact amount and date of emi, i came to know that whole staff has been changed and the person who is there in place of sanction officer told me that there will be 84 emi's of rs 7681 staring from 20th october 2018 and also i came to know that they haven't had claimed interest subsidy and now the outstanding principal or amount overdue is rs 376000. I have also calculated emi on rs 376000 and it comes out to be rs 6789 but they are saying it to be rs 7681
What can i do in this regard.?
Hoping for a positive and early reply.