Create a pivot table having 1 dimenion as row, and in columns i want number of calls and in values no of leads who have been called 0 times, 1 time, 2 time and so on

Agree with ErikG. We can help you further after you replicate your issue with a simple dashboard and non sensitive data at our Arena: QuickSight Arena – An embedded instance of QuickSight within the QuickSight Community