I can feel your pain bro, similar thing happened with me in Carla in 2014, I hit the same exact corner on a redundant concrete block lying in the parking and it couldn't be seen, jab awaaz aai tab pata chala ke kuch hua hai
it had incurred a really bad wound until recently when I got the bumper repainted lekin uske baad phir zara si touch ho gai while parking which chipped off 1 inch of the paint on extreme bottom 
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