Decofurn - disappointing customer service!

I am so disappointed and stressed!!! I bought a few items from DecoFurn Greenstone in August, amongst those things I bought was a round dining table. The day before the delivery, I received a call from one of the employees that they don't have the dining table in the colour I wanted and I'd need to collect it myself at a later stage when they have it in store. They delivered the other items without the dining table. I called the store on the 18th of September and I spoke to about 3 people until someone helped me. The people I spoke before to said that there was no dining table on my invoice and I was away from my place so I couldn't email them the copy of the invoice I had, but quite frankly I did not understand why they couldn't see it on the system. I eventually received a call from a man who assisted me saying that they found the invoice reflecting the dining table and with a note that the customer is to collect it. I asked the manager to email the invoice and she did. It's been 2 months since my purchase and when I call the store I get the employees who ask me for my number and say that they will get back to me. I am still waiting for communication from the store. I need a refund or the dining table ASAP!