Hairsh,
Create a variable with the below formula and apply filter on that.
=[Repeated Calls]In([ANI])
This formula gives you the repeated calls for every ANI. For ANI 5555555555 the variable will give you the value 3.
Apply the filter on the variable >=2.
Or also you can do it using the below formula too
=[Repeated Calls]ForAll([DNIS];[LOB];[Call End Reason];[Call End Location];[StartTime])
Cheers
Sri Harsha