There are other organizations which are approved. Try to google ECA and the name of your university.I have tried again. Actually there is no option called Bangladesh under the 'Country of Education'.
Btw, thanks a lot for your help.
Recently, I have seen few Bangladeshi people's WES assessment report where WES assessed their universities as non-recognized.
I am from International University of Business Agriculture and Technology (IUBAT), Dhaka, Bangladesh.
I am too worried with my university's recognition by WES. That's why, asking here if anyone can help...
http://www.cic.gc.ca/english/helpcentre/answer.asp?qnum=681&top=29