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Has Anushka Sharma and Virat Kohli's latest bout of do-gooding backfired?

The celebrity couple have been served a legal notice by the man they publicly shamed for littering on a road in Mumbai, reports NDTV.

The man, Arhan Singh, was spotted by Anushka throwing a plastic wrapper from his car's window last week. Anushka called him out for littering from her neighbouring car and Virat Kohli uploaded a video of their exchange on social media. The video went viral.

Singh first hit back with a Instagram post, in which he bashed Anushka and Virat: "The garbage that mistakenly went out of the window of my 'luxury car' was way less than the garbage that came out from your mouth, from your 'luxury car's window, or the trashy mind of Virat Kohli to shoot and post this online... for whatever gains. Now that's some serious trash."

Now he's served them with a legal notice, saying to ANI, "Hi. My legal advisors have sent a notice to Mr Virat Kohli and Mrs Anushka Sharma Kohli. As the ball is in their court, no comments now. As in all fairness I should await their response."

While Anushka is ambassador for Indian Prime Minister Narendra Modi's Clean India Mission, not everyone is convinced that she handled the incident well. She's been criticised of being "rude", "impolite" and "arrogant" with Congress leader Sanjay Jha jumping into the controversy last night, saying, "Celebrities don't need to promote themselves when supposedly attempting a good thing. How much publicity do you want, guys?"

Anushka and Virat are yet to respond to the legal notice.