State Bank Of India [SBI] — E - corner of sbi

Address:

East Sikkim, Sikkim, 737101

Yesterday (01/08/2016), i tried several times and even staff deputed at e - corner room (Located at m. G. Marg, gangtok, sikkim) help me to make online payment of housing loan, i am sorry to say that machine didn't accept the cash.
Immediately, i informed to the sbi office located in same building, the concerned officer accompanied me to confirm the error from the deputed staff. Staff informed him that machine has decline to accept his cash.
As such concerned officer informed me that since transaction is related housing loan, you cannot make payment from this e - corner.
My question is... 1. What is the use of e - corner?
2. Is it not possible to make online payment of loan from e-corner
3. What ever the officer concerned has said is really true that you can't make online payment/ deposit cash from e-corner please