did you apply for a position that asked for a CS degree? It was remiss of the company not to spot that earlier and save wasting theirs and your time.

I would never consider a candidate for a software engineering role that didn't have at least a CS degree. Possibly, EE, but nothing else. I have learned this the hard way, while others have learned to code they very often do so with little regard for design abstractions that are taught in school. Another reason for this requirement is the prescreening that comes with the CS degree. For example, an MIT CS grad has gone through rigorous testing for four plus years, far more than any two hour interview process ever could. I've never hired an MIT grad that didn't work out great. Ditto for some other schools, but especially so for MIT.