Late delivery ,No assembly. 3 weeks waiting

We bought furniture 3 weeks ago in Fair price Thohoyandou near game, they promised to deliver within 7 days, 7days passed and we had to call for 2 days before they delivered. Since then we are still waiting for the guy who's supposed to assemble, they said to expect him yesterday,yesterday...today ,and here we are with boxes full of pieces. Almost 3 weeks from the day of purchase. We are just waiting for Tuesday so that we can carry the boxes back and get our money. They never told us any truth from the beginning.