Ford India — Ecosport Shocker problem came at agency during service.

Address:

Pearl ford ambala cantt

I went for servicing of ford ecosport at pearl ford ambala.
Before service, mechanic driven the car for trial, there was no problem in the car. When I came back, on my way to home, I felt jerk and shock problem, when I went back to the agency, they told rear shockers are unserviceable.They replaced the shockers and charged me 7500 rupees.
I talked with them regarding this, they told problem can come anytime. Before that there was no problem like this in my car.I am totally unsatisfied with the service and I have full doubt something wrong they had done.
Also they took car out of the agency without informing me.
As per checklist also shocker was ok.