I had this exact same thing happen.
She gave me a shop with a good bonus. I never got the email showing I had the shop. I checked my job site. Nothing there. I called her. She never called me back. She never put the job on my board.
I took her name I had on a piece of paper and ripped it up, throwing it in the trash. I don't remember her name and don't want to remember. But I will always remember the Mystery Shopping Company that has her working for them. Shame on schedulers that do that. Have some manners and at least respond to the shopper who is waiting in limbo.
I strongly believe she gave the job to someone else, someone who she had called earlier. I believe the shopper was awarded the job, after I was given it.
As a result I no longer trust this person and now I require an email while on the phone for notification/confirmation for any company..