"Give me a call" - that's the new campaign Mamata Banerjee launched in Kolkata today to give her 21-year-old party, the Trinamool Congress, a makeover. "Didi Ke Bolo (Tell Didi)", her new calling card, actually has a cellphone number where you are invited to dial her in need. Also, a website of the same name where you can leave your thoughts. And Didi will get back to you is the promise.