Central Board Of Secondary Education [CBSE] — wrong date of birth in my 10th marks card

Address:

1st floor nanjappa nilaya nanjappa layout arekere bannerghatta road Bangalore, 560076

Following are the correct details
Name: chirag v
S/o: venkatesh n
D. O. B:[protected]
Roll no : 4053824
School : sri chaithanya techno school
Bannerghatta road
Bangalore 560076
School no :41413
Center no :4216

But in my cbse 10class marksheet my d. O. B is oriented as follows

D. O. B[protected]Correct[protected]

Respected sir/man

I want to know that how much time it will take to correct my date of birth.
In my puc board they are not accepting my correct date of birth on behalf of letter issued by
My college where i have completed my 10th exam. They told me that they will take admission according to
Date of birth mentioned on 10th certificate and that is wrongly printed. Sir/mam, i have request you to please send me the correct markscard as i hav to take up my pu exam... And i hav to give them the correct dob markscard...
So please look into it n get my markscard as soon as possible
I'm been asking for the markscard from 1 year. Still i havnt received.