Tata Docomo — Not giving me itemised bill for may and june months.

Sir, I am Rajesh Shrivastava using Tata Docom number[protected]. I have requested many times for itemised bill for may and June months. I have first registered my complain at 6 June but I got duplicate bill instead of itemised. And till now I have complained many times but they are not sending me appropriate itemised bill. And now they are saying that they can't send me itemised bill cause 6 months have passed and they will not send itemised bill for that month. Now if they hadn't send me that bill with in 6 months then it's not my responsibility why I should not get my bill . I also complained at [protected]@tatadocomo.com but they also said the same. So I want that company provide me my itemised bill for 1st may to 31st may with time of call and all other information in a well arranged order.