IDBI Bank — home loan - difference in rate of interest

Address:

500072

Taken home loan with idbi on 2006 on floating rate of interst. It has been observed when rate of interest on gone up they collected the additional amount and the same has come down the rate interested un changed and they is no reduction in emi.
Bank : idbi
Home loan ac no.[protected]
Customer name : venkata krishna reddy duggirala
Phone : [protected]