India Post — Non delivery of Posts and asking for bribe

R/sir/ Ma'am, My name is vikash kumar a resident of Subhash Colony, ballabgarh Our post man is very corrupt, he never deliver our posts at our home and when we reach post office he say i don't know about this address. and after a long debate he will agree to give our letter or other post material and asking for bribe He say "kharcha pani to dena padega" sir please do something as soon as possible Thanks and regards