Tds revision matter

My employer had quotted wrong pan in form 16, after that he had revised the return on 16th jan, but till date no credit was given under 26AS, while asking for data from tax consultant, he was saying that since the process was online, nothing can be uploaded. Is it true? & if something was genetated than pls tell me frm where & what r d forms. I am salary based employee. Pl help as urgent as possible.