Gic Housing Finance — Housing loan interest rate and emi amount

Hi my name is Dhaval Prajapati. My loan account number is MH[protected]. Till last financial year my emi amount was 14058rs with interest rate of 9.35% but in the current year my emi amount is increased to 15506rs with interest rate of 11% which is without any communication. This is completely unfair practice and not acceptable at all. I need a proper explanation on this and reimbursement on my emi amount deducted this month along with that my interest rate needs to be decreased to what it was earlier. If not then will take further steps and take this to next level.