Mahindra Two Wheelers — Mahindra gusto servicing issues

Address:

R.K. enterprises, bahadur pur, patna

In my mahindra gusto i was facing little bit issues in starting time, so i was gave my gusto to the patna service center name:- R.K. interprises,
he given me a receipt of ₹23, 000 rupees, after that i told to him that leave my scooty, but they were opened my whole scooty and scooty engine too, ..
then i was requested him to bargain, because ₹23, 000 was too much access for the scooty, after bargaining he came to ₹21, 000, then i asked to him that when will you give my scooty, he said after 4-5 days,
but till now its 18 days gone but he didn’t gave my scooty, daily i’m calling him but he always makes some excuses, please help me, …
and he was taken ₹15, 000 in advance too