There is hardly any Xiaomi service centre in Chandigarh, therefore to reach the service centre for Xiaomi you have to travel a bit. The below few lines mentions the Xiaomi service centres near Chandigarh:
If you have the time to move to Delhi you can go to Nehru Road in New Delhi. And search for MI Exclusive Service Center,944/11, Laxmi Complex, Nehru Road, Arjun Nagar Opp Defence Colony, New Delhi-110003.
If you are not comfortable in moving from Chandigarh to Delhi than you may go to NOIDA which is a good place to find Xiaomi service centres one of the which is Satyam Communication, if you have the desire to reach the Satyam Communication you may follow the following route J-34, Basement, Sec-18, Noida-201301, Uttar Pradesh. 0120-4210142 / 9873100605.
Not feeling comfortable yet? Then you have an another way left. You can move to Jaipur which is not that much far as others and the reach at F-46-B, Ramesh Marg, C-Scheme, Jaipur-302001, Rajasthan. 0141-3055706 / 0141-3055704.
If you are really interested in moving any of the Xiaomi service centres. Ensure that the service centres are not closed on that day for this you can contact them via given mobile numbers after the address.