Audi India — The car just stalls

Dear sir..I bought an audi Q5 from audi Karnal on 24th Dec. The car stalled and stopped responding in hills of dehradun in mid Jan.. it came after a month on Feb 13 with changed esm...some sensors failed they said. Again it stalled in the hills at 10 pm on Feb 13. There was a toddler and women and we were in a forest area. The executives did not pick phone. We called Mr abhishek arora then people responded in audi dehradun...this is unacceptable. Please we want a refund as we cannot trust audi in our lives.