West Bengal State Electricity Distribution Company [WBSEDCL] — Mismatch in address

Address:

Kolkata, West Bengal

I repeatedly reported that my con. Id is.[protected], flatno.9, kedarnath apartment, 2nd floor, ce-312/1, kestopur, kolkata, 102.
But in bill address is written as flat no.19 which is occupied by other.
I reported in writing t0 krishnapur ccc office on.29.2.15 (Dy. No.5003) &on 11.5.15 (Dy. No.426). But till date no correction made.
I face difficulties in giving add proof as and when required.