IT'S a love-triangle straight out of Silsila. Only the Bachchan involved is different. Sarosh Zaiwalla, noted London-based solicitor, who helped clear Amitabh Bachchan's name in the Bofors gun deal, has charged the actor's brother, Ajitabh Bachchan, of having an affair with his wife Renoo, which has led to their divorce. He has also alleged that Ajitabh slept with an employee of his firm. "I feel terribly let down by the Bachchans whom I helped when they were in difficulty. I feel a bit deceived," says Zaiwalla.