Shriram Chits — Renewal and interest rate

Address:

Ranga Reddy, Andhra Pradesh, 500047

I took gold loan in the month of april 2017 in the amount of 2 lakhs with interest rate @ 0.95 paise. Now after completion of 3 months when i'm here to pay interest the management says new interest rate is rewised and it is 2 rupee.
How that is possible when it is no proper intimation to customer. And management does not have any proper documentation in regards to rewise in interest rates.