L&t Finance — Noc complaint

Name :upasana
i am writing this to concerened my scooty noc, ,

spoken to a collegue of l&t finance name anil .
he made a settlement letter of rs 24000 for my scooty,
when a cleared my amount of settlement letter, i didnt received any call from l&t for my noc .
its been twio months i havent received any noc yet, though calling in the branch they are saying we dont have any agent name anil. now they are deniying to give my noc and asking for full amount of scooty . i have all the proofs of payment and conversation with the agent name anil . please suggest the next step or to resolve this query