Wallace house are bad because of their administration in my experience. The doctors as I imagine with any surgery are fine. At wallace house you have to really battle with the rude receptionist in order to get an appointment that isnt at LEAST 3 weeks away.
They've said time and time again they'll improve it, but I've not seen any improvement.
And I imagine for most people, especially those that are healthy and not already on a prescription, if you're ringing the doc, it's pretty much unusual, so you're generally not going to want to wait 3 weeks!