I contacted university and they sent a letter mentioning the same, something like, "there was no markslist provided for 6th semester project work, overall grading for the overall course/degree was done on the basis of first 5 semester marks". and then sent it to WES.
After that WES again said that the Univ need to send the same in email. (Here the trouble starts!) To provide the WES email address to where the Univ can send the letter, Univ has to directly contact them using the "Contact Us" form on WES website. Now, you know which Indian univ is ready to do things as per student's wish??? (Its a long process but finally done and they accepted)
I am not discouraging with above. If you are in some similar situation, "DONT LEAVE, FOLLOW UP! FOLLOW UP! FOLLOW UP!" the univ and WES both of them. Send emails to every email address on your college/univ website. all professors, prinicipal, viceprincipal, registrar, controller of examinations, everyone out there! someone will reply! Literally this is what i idid!