West Bengal State Electricity Distribution Company [WBSEDCL] — security deposit not refund to me till now

I am debajyoti bishal. I had an electricity connection in the above-mentioned company and the consumer id[protected]. I surrendered my connection in september 2018 and i applied for the security deposit refund and the complaint no-575 on dated 12 june 2019 at marishda ccc, contai, purba medinipur. But till now i have no information about my complaint and the company does not send any acknowledgement regarding my complaint to me and also my money.