It's surely difficult to trace Vidya Balan who is always on move. Try to contact her for any clarification or quotes and the calls or text messages are forwarded to her business manager.
The business manager has one set of answers ready when reverted that "Madam is busy, she is traveling. Your message will be conveyed and we will get back to you." Haven't we heard that cell phones are supposed to be used while traveling and hence also called mobiles?