Trai — charged rent after porting from vodafone to idea network

I had ported my vodafone number to idea network from 16/03/2018, my billcycle wasin vodafone every month 10th, so normaly ihave to pay the rent in prorata base from 11th march to 15th march, and i amready to pay, my plan was 349 red business unlimited with vodafone. But april 10th the vodafone generated and charged rent from 11th march to 21st march, instead of 15th march, ie six days rent they charged from me in additional. The same time i got the idea first bill i got it. They also charged me the rent from 16th march onwards, but they have the right to charge the same because i was used that network from 16th march onwards. The vodafone charged me an amount for isd call and it was made on 16th evening, it absolutly wrong because 16th morning i was ported to idea and i am using idea sim at that time. The funny thing in the call details of vodafone is showing up to 21st iwas used their network and made lot of calls. This way they are cheating the customers