Hyundai — Agency fault

Address:

Chandigarh, Punjab, 160028

Hi first of all I like your cars but due to unfortunate incident which happened which me was, I own Hyundai sonata which met with accident 2 times and got repaired from the agency .I got my car serviced after 1. Year approx 12000 km and the car is 3 yrs old .after service my car just ran approx 200 km I can say in 1.5 months and after that my car just got bumped on the road and the engine fell down Axel got detached and the monting of engine broke . when went to agency by towing van they say it is you fault and internal damage we can't do anything . they said to change every part costing about 11k and insurance person also said no as there was no physical damage no scratch from under .then had no choice to take that car and repair from outside costing 1500 only and for towing outside 600 and my car was fine . there mechanic found the broken but in the engine box and was covered with rust .from this we can say it was old enough and the agency didn't check it thoroughly at service due to which engine slowely went down and broke everything. Now tell me whose fault is this and do tell me what I can do to the agency . Agency name is Charisma Hyundai Chandigarh industrial area phase 1 plot no 7