I didn't even buy the cameras, the game let me place them with just my plumbers suit in the inventory.
So you wore the suit - but didn't buy the cameras.
And you're wondering what went wrong?
Go to your previous save and buy the cameras along with the suit and the wrench (plumber's key) and try again. Let us know how it goes.
I think I now know WHAT THE FUCK IS WRONG!
EDIT:
Are you high?
I just tried various ways to ONLY buy the uniform. To ONLY buy the uniform and the wrench (plumber's key). To ONLY buy all that plus one camera. To ONLY buy all that plus 2 cameras. At no time was I allowed to enter Priscilla's home until I had everything I needed - the uniform, the wrench and all three cameras.
So that wasn't what you did. If you did - you're amazingly unlucky. Try again - when you do, record your gameplay this time with Windows Gaming Capture (WIN+G and press record) maybe you can reduce the file size and share your results. Maybe we can capture this FUBAR activity "live".