Let's try to solve?
Perhaps ns wanted it to see how things progressed but didn't think you wanted to know? Not a good answer! maybe, thought they called you, but didn't? Naga! time gone by and now wants interval exam? Okay, it's reasonable? Then sometimes we all just make mistakes? Good reason, but needs apology! did you call to inquire about the results? Need to talk! both sides! hope this helped?