Service pretty awful so far

Bought Samsung TV + blue-ray + sound-stream on May 6th. Total cost £1200.00.
including setup price of £90.00. Original set up meant plug in TV and leave. The TV worked but nothing else did. Had further visit Saturday from engineers who didn't have a clue on connecting the system, they also left having achieved nothing. It is now Tuesday evening and we have been trying to cancel tomorrows appointment with yet another engineer who is supposedly arriving to sort out all problems. We have been hanging on the phone for 15 minutes with music ringing out of the earpiece, at we think 40p per minute,and have now had enough. After-all we are trying to save them a trip out to our home, which will be a waste of everybody's time. Will try to contact someone in the morning to cancel said visit, but not holding our breath that we will actually get to speak to somebody. We are not at all impressed with the service rendered so far. And we will be expecting a full refund of £90 + for the so called set-up fee.