Non delivery of Goods

In June 2014 I purchased 3 pool loungers, a cantilever umbrella and 8 chairs for my Lapa from H&H Menlyn, including delivery. I left Strict instruction to be contacted prior to delivery. The truck arrived at my house unannounced, I got called by my domestic and asked her to allow them to drop the stuff off. They apparently delivered everything including the pool lounger covers which I already collected in the store at the time of purchase?? The 8 chairs were never delivered, when I got home that afternoon I peeped into the storage room where all the stuff was put in, saw the steel frames from the pool loungers and the cushions and assumed it was all there. My pool and Lapa was still under construction, once ready I started unpacking the stuff and setting up my pool area only to realise 8 chairs were not there. I went straight to the store and reported this, I was told they would look into it after going back and forth for a month I eventually got their copy of the delivery note as I had mislaid mine. They got my illiterate gardener to to sign as receiving the goods. They insist they delivered the goods and protect their delivery contractor. They also have a very bad attitude.