Hero Motocorp — mrg motors service problem

Address:

S.RAJA ,83,Periya veethi ,saravanampatty,coimbatore-641035, 641035

I am raja from coimbatore my two wheeler notn38av4725 i am doing all service in mrg motors ganapathy, coimbatore, my problem oil leakage and noise, oil dry in engine same problem came from2017to 2019 i lose more money. But my problem not clear i informed service center manager mr biju many time he told new reason all spare parts change i want solution, he told hero bike engine life only 80, 000to 85, 000km but i am change valve, cylinder, timing chain and many parts but oil leakage not stop now mr biju told connecting rod will change, and silencer change this is not reasen that service all person unknowledge person. He told all time parts change but not service i informed customercare and doing mail but not receive reply please give one good solutions to me (My money more waste)
Thank you