Groaning rubbing sound at twenty kmph to ten kmph while decelerating or when in neutral

Had run 12,000 miles with my car. Recently after the third service I found a groaning/rubbing sound coming while decelerating or when in neutral at around twenty to ten kmph. I cannot make out the sound when accelerating due to the turbo and when below the ten kmph mark. I had mentioned the service station about the skidding of my vehicle to one side on sudden application of brakes. I also asked them to check the front-left suspension as I once hit a very bad pothole with bursting of the left front tire. They said they did not find any problem with the suspension. Please help.