Accenture India — College does not match with the document uploaded..

I attended Accenture's off-campus drive. They have sent me the LOI, I have accepted the LOI. Now I am filling up the documents. Everything is fine I have submitted all of my details except the "Education" one. It is showing that "College does not match with the document uploaded..". I have uploaded scanned documents and I have cross-checked all the documents. All of the information is correct. I have tried to contact the help desk and told them my query I have been waiting for 3 days but I didn't get any response. Maybe there is some problem from my side.