Wait until you get the report. Then you can look at the numbers and see what it all means. It could be a scoring error. There could be cause for extended norms that weren't used, or a substitution was made for some reason unexpectedly.
I know what it is like getting numbers that don't match up and it is so frustrating! We ended up testing again about a year and a half later and the numbers matched a lot more with what we were seeing to day.
Also, good advice to consider explore or possibly even just achievement with portfolio.
