Trai — switch off date changed

My registered mobile number with dishtv is [protected]. On 19/6/2018 i got it recharged with rs. 10920/- for one year and according to their scheme i got 14 months and my recharge date became 15/8/2019. Now i am seeing that they have changed my recharge date to 9/6/2019 and reduced almost 2 months of my plan. Earlier my monthly plan was of rs. 1040/- (almost). Now after trai scheme it is 994/-. So instead of increase of days they have reduced them and after many complaints to them, they have not responsed. Please look into this. Thanks gautam