Bajaj Auto — Mileage setting has gone in second servicing

Address:

500028

Hi
iam P Bhushan kumar, i have bought a Bajaj Platina comfortec at DECCAN MOTORS TADBUND ROAD, SECUNDERABAD, 5 MONTHS BACK.
1) before 1st servicing my bike was giving millage 65 km + in, single and double ride.
2) after first servicing the milahe was 85 km +-, in single and double ride.
3)after 2nd servicing, milage droped to 65 to 70 km, in single and double ride,
in-regards i have given the bike more than 5 times to rectify the problem.but they didnt fixed it, its caused somuch trouble to my work and time and consumed my money.
4)now time has come for the third service, center people are saying that they cant fix millage problem
plz look into the issue and help regards.
1) i feal there may be mechanical defect or they might changed my bike parts or may be manufacturing problem,
so plz look into the issue and get bak to, me asp
regars

P Bhushan kumar
mobil no [protected]