Kay, it wasn't me, you know that cause I wouldn't know the right language to use to even get your ire slightly up.
If it wasn't the obvious players, so online to declare their innocence (never really trust that) you got be more sneaky than they were.
* It is someone who knows your telephone number
* Someone who knows you well enough that they will call and giggle into the phone, and not worry that you will recognize the giggle
* Did you name the business you were doing business with on this site? If not, that narrows the field to someone you have talked to via PM, eMail, or phone
* They know what you are having done, and what would hurt the most if indeed the part were to fall
So ....... who is it? This is a job for a detective. We have a couple of them on this site. Who is the sneaky, funny jokester.
I wish I could have/would have done it, too. Sorry, just being honest.