ANSWER: Depending on which program you enrolled in, there are different ways to recover it.
If you enrolled in the actual TSA PreCheck program ($85)
you can call the Universal Enrollment Service (UES) 855 - 347 - 8371 or you can look it up on the UES to the website: https://universalenroll.dhs.gov/workflows?workflow=service-status&servicecode=11115V
If you enrolled in another Trusted Traveler program (paid $100) then you need to contact Customs and Border Protection at 855 - 873 - 4637.
I hope I have answered your questions. I aim to give you excellent service, even if the outcome is not what you wanted. So I am happy to answer any related follow-up questions you might have, at no additional charge.
And if you want to talk on the phone for 30 minutes, I can send you an offer for that.
Once you have received an answer, please leave a positive rating by choosing on the 3, 4 or 5 stars so I get credit for doing my job.
A BONUS is also appreciated, if you feel I've earned it.
And if you have questions in the future, write FOR JAMES in the question and I will be your personal Expert in this category.