Consumer Redressal

Hi, I have completed diploma in 2000-2001. Now i have completed B-tech and need my Diploma TC to get my B tech certificate I had requested my diploma collage to issue TC. Based on the request they have issues TC and they have mentioned year 2020-21 ( Year of requesting TC) rather than mentioning my last year of exam/passing year of Diploma which is 2000-2001 as school leaving year. Now B-tech collage has refused to accept my TC where leaving year is mentioned as 2020-21 where as collage is refusing to issue TC by writing 2000-2001 as leaving year Pls suggest how to get solution to above Regards Shrikant