Central Seat Allocation Board [CSAB] — refund of fees

Good evening sir
My son a bhargav manohar
Had been allotted with a seat in iiest shibpur and paid fee acceptance and reported but opted for special round csab got seat in nit rourkela during special round 1 for 5 yrs int physics and again second time paid fee acceptance fee but due to some unforseen reasons he could not join and not report to the institute where as i paid fees for counselling in josaa and csab, thus i request for fee refund process as early as possible, as others had got fee refunded where as my son was not allowed to join in iiest shibpur as he opted for special round seat accepted the said the seal was automaticall cancelled, he could not join in rourkela nit as the wrong option was accepted i. E., msc int phsics which is mere degree and he wants to be anengineer. Please help me out to get atleast fee back where two fees were paid none college was joined, where is the justice,. Because there is response and nobody attending the calls made by me several times for enquiry as given in the website number.

His details are
Adepu bhargav manohar
Jee mains applications no[protected]
Jee (Advanced) 2019 registration no. Is r[protected].

Thanking you
Regards a ravi manohar
Oa at apgvb
Mobile no. [protected]
Email; [protected]@gmail.com