Poor services from Sta Travel

I had gone to sta travel around March to go and layby my trip to the United States in July I got my ticket and started paying slowly as the rule. A month before you need to pay your whole ticket but I decided to get a refund of my ticket because I had found a better deal online therefore the refund process had started,they said that the money had been paid into my account from the 10th of June. There was nothing reflecting into my account. I had called the head office to check what was the hold up. They had sent me the proof of payment and that I saw the there was even R500 missing from the total refund. It’s a month later and I’m still awaiting my refund from sta travel and yesterday on 9/7/19 the consultant try to go over my details, all to find out that they were wrong and there is no one trying to fix this problem or even assist in the issue at hand. I’m disappointed in the poor services and how they handle their refund process and as a customer coming to them one would think they will be attended to and have the issue sorted by now. I’m frustrated at this whole situation and all I want is my money back from them