Maruti Suzuki India — problem regarding to maruti service

Dear marruti
I m using your maruti alto 800 lxi (Up32 fh6434) from 2014. I was facing some battery isseu in my car then visit your service service station krishna motors address: hardoi rd, thakurganj, karim ganj, lucknow, uttar pradesh 226003 and mr. Kamlesh sir (Service managar) said your battery is damege and and need to change then your prblm is solve and i m paid battery costing 3700rs. But within some day my problem still then i m said to again now he said this prblm is in your altinater so need to change. Now i m pay for alternater its 8660/-rs but my problem still...

Present time mr. Kamlesh no more working with krishna moters but he is giving me threatening calls for payment and is saying that he will pullout the alternater from my car. I am very disturb by this life threatening calls. I fear for my life because mr. Kamlesh is coming to my house for last 3 days with sevrel anti social elements. As i am working in samsung and i am not available he threatens my family members.