Bollywood actress Kalki Koechlin is miffed with fashion designer duo Riddhi and Siddhi Mapxencar after they allegedly called her "mentally disturbed". According to reports, 29-year-old Kalki, who was the showstopper for the designers at the Glamour Style Week 2013, forgot to walk the ramp with the duo. This move of hers angered the designers."After a 4hour wait in lehenga, jewellery make up they have the gall to call me mentally disturbed! Riddhi siddhi, dp designers, shame on you. I did not walk away from the ramp. Organisers whisked me off and took me to a press area where I was doing interviews praising the designers," Kalki wrote on Twitter. However, Riddhi and Siddhi have rubbished claims that they called the actress mentally disturbed and insisted whatever is being said about them is untrue. "We are shocked to see this accusation from her. We would never stoop down to talk about anyone this way. We were glad that Kalki was sporting our garment on ramp as we think she is one of the best dressed style icon in Bollywood," the duo said. "It was primarily a jewellery show and not a clothing one. She was supposed to walk with jewellery designers," they added. The duo are miffed with Kalki for dragging them into this without checking the facts. "We do not need such kind of publicity by putting someone else down. The least Kalki could have done was to ask her agent to call us before putting the matter on twitter," Riddhi commented. "We need an official apology on Twitter and other media about the same as she has been responsible for defaming us for no reason," the duo said.