“Later as our sleuths went deep into the integration they identified the major racket behind it. Once any couple unable to bear a child in a normal process contacted the IVF center, its staff used to contact Mamata Patra, who promised the couple a child after a reasonable period of time. Child Trafficking Racket Busted in West Bengal: Kolkata Police Busts Illegal Child Selling Racket Involving Around 100 Surrogate Mothers.