iBall — tablet

Address:

Sector 40 Chandigarh, Chandigarh, Punjab, 160036

Sir
Ihave purchase iBall tablet on 28 July 2019
And face problem just after one week.
And submit to iBall service centre located at sector 41 Chandigarh on 12 August 2019
and get back on 28 August 2019 but this time there is power as well sim (not work) problem faced just after 2days. They made it more faulty this time.
When I connect with their customer care they told me to submit again at their services centre
This time I submit that at their services centre located at sector 22 (Inspirisys solutions limited) Chandigarh on 6 September 2019 Till
Now they don't did anything with that
Whenever I called them to know status they told me that we don't know how many days it take . when company send the parts which needs to replace
I don't know how many days they require to resolve that
Please help me
I have purchase bill as well as customer receipt