This is none of my business, but I really don't care because this is a customer service pet peeve of mine. ...

Assuming you really represent the "Morrocco Method" (with a misspelling of the word "Morocco", the country), I don't understand why you'd shoot your business in the foot w/an insincere response:

On the one hand, you apologized for not getting back to her sooner. But on the other, you said, "We're very disappointed you felt you didn't receive the correct response .... " Obviously it was more than a "feeling" she had. She just didn't receive any responses at all, by your own admission. Come on. Stop playing games with potential customers.
3b/c?

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