Ignou — Grade card issue

I am a student of IGNOU University. I have submitted my assignments on april 2021. Now more than 330 days completed but still my assignment Marks are not yet updated in Grade Card. I have sent several emails to regional centre varansi and study centre prayagraj 2703 but none of them give me a Positive response. Not only this i had visited both the centres but there IGNOU employees are behaving rudely and badly with me no one is ready to answering me. Their irrelevant behaviour leads to mentally harrassment on me. Please do some action towards them and help me to provide my marksheet.