We're really sorry you're having trouble - we know it's frustrating when you can't get through.
It's worth keeping in mind that most venues do get busier during a deal. Restaurants will be particularly busy around lunch and dinner, and hotels around check-in and check-out. If the venue doesn't answer your call first time, we'd recommend trying again when you think they'll be a little quieter.
If you're emailing or leaving a voicemail, make sure your message includes your name and contact details. If you don't hear back within a couple of days, drop us a line at firstname.lastname@example.org and we'll be happy to lend a hand.