Dishonest people, material stolen, delayed service amongst other issues

I got an online quote from OncallSA (Approved CTM installers) which I paid for immediately. The team was kind during that time, called me and even arranged that one of their guys come and help me buy the material the next Saturday which I was thankful for. After I paid for the material, I gave him the slip so that he can collect the material when he goes off to my apartment to do the job. we even agreed that I would pay him R450 for the delivery of the material to my apartment. He then advised that the installation will be in a few day, since he had other jobs lined up...this was not a problem. The agreed date came and passed, by that time I was under the assumption that the installer have done the job since they were to arrange with the tenant so that they can access the apartment. I leave for a whole week on a business trip, and on my return, I find out that no job has been done. I then asked both the contractor and OncallSA when they plan to do the job as the tenant is suffering form sinus/allergic reaction to the carpet. At first I get ignored by the contractor, and then eventually the company replied...no apology, just a cold message with a later date. I decided not to think too much about, until the job was done. I was happy with the outcome of the installation, unfortunately I could only see it in photos but I am yet to assess it physically. But the other issue that arose was the left over material, these were taken out of the flat by the contractor...I told OncallSA I would come collect the unused material from their offices but they have advised that I must pay the R450 for delivery first or they will sell my material. I immediately paid the R450, sent proof of payment and I asked them to confirm. They told me they will arrange drop off the material at Brackenfell even though I insisted on collecting it at their office to make it easier for them (I asked them not to dropped the material at my rental apartment, for the comfortability of the tenant and lack of space which they had suggested initially) . It has been 6 days and no material has been received and my messages are ignored. I have paid full amount for the installation, full amount for the material and full amount for the delivery. No response or communication about my material, does this mean my material has been stolen? and why am I being ignored now...if you did not want to do business with me, you should have sent back my money instead of ill-treating me like this. I even had cheaper services offered to me, but I thought your company had a good reputation until this late installation issue, theft case and disrespect. Personally, right now I don't even want that material...you feel the need to rob me, that's fine. I feel disrespected by your employees and I want nothing to do with your services but I will take it this matter public and legal...it's all about principle and my consumer rights have been violated.