You cannot sell a car and deliver a bike and act as if it is all the same.  The product did not match the tune or rhythm of the provided tab.  It is not a matter of interpretation.  Even properly tuned and undistorted the notes played would not be identifiable as the requested song.

In a false attempt to claim this as the product promised and not the entirely distinct song it was, you have now admitted instead to purposefully providing a low quality unrecognizable product.  Such an intentional action out of spite to provide an unrecognizable product is an admission of scamming.   You may as well have agreed to sell me a hamburger but instead sold a hot dog you spit on.  Clearly not the agreed upon product.

If you are indeed capable of playing Mary Had A Little Lamb in a recognizable manner which as an expert guitar player you surely can, you can provide your defense by recording it and posting it for this thread.  Given your history of fraud, however, you should do it on video and provide us with identification.