Did you run the set up on the receiver to balance the levels of all the speakers and the distance from you listening position?
That sets each channel to play at the correct volume that the audio engineer wanted when the soundtrack was mixed. That means that there will not be surround sound most of the time during a movie.
There could be a problem with the wall speakers or the wiring going to them. If you can connect another pair of speakers to the receiver than would help figure it out.