National Payments Corporation of India [NPCI] — fund transfer on wrong account

I send rs 2000 to my friend through *99# on 14/12/2018, but mistakenly i entered wrong a/c [protected] instead of actual a/c [protected]. Transaction no is[protected]. I also lodged complain on bhim, complaint no is 111834. Two days passed but there is not any response, also complained on support. [protected]@sbi.co.in not any response. Help me to get my money back.