I am going through the same situation. I got denied by WES as well. I just tried IQAS and they said the same. But at least they are offering a refund - WES just kept the money without an explanation.
I am at a loss. I do not know what to do about it anymore. I have extensive talks with my university and the Department of Education in the US. What i find odd, is that ACICS is here in Canada too. And the entire purpose of the accreditation check is to confirm that the degree has the same standards as they do here in Canada. This seems like a huge oversight. Not only that, these accreditation institutions claim the US ONLY does regional accreditation. Which the Dept of Education will tell you is absolutely not true.
Any ideas?