Still waiting for my refund

I had booked a return flight from South Korea to Hong Kong and from Hong Kong to South Africa, I needed to postpone it. I called their tall free number and they were very happy to assist however in that process I was charged 3 times. Two days later when I called and asked for my card to be refunded, i was told it only reflected one charge from their side and they will first have to investigate this. I was asked to send an email with proof of my claim, since I did not have a pen with me I asked the person to send me an email so I may respond to it. Till today I’m still waiting for the email. 1. I was made to wait on the phone for a whole 30 minutes while when I made my booking it did not even take 5 minutes for my card to be charged. And yet I’m told it’s impossible as their system only shows one charge. So I said okay, please send me your email so I can send the proof...till today I’m still waiting for the email. 2. After waiting for the email and having no response I decided let me try calling again and guess what...I was transferred to customer care and this time I was told the supervisor is busy, so I requested for the manager and again told he is also busy. I was made to wait for the manager on the phone for another 30 min. Bare in mind that I had already waited to be transferred from sales department to customer care who had already made me wait for 20 minutes for a busy supervisor that I did not even speak to. Though I had already spoken to accounts department and customer care...till today no one has sent an email or tried calling back to investigate the case and yet my money is out of my account. I’m wasting my time, energy and been financially inconvenienced. This is the worst service by far I’ve ever received. It was my first time booking with cheapoair and I’ve had the worst experience ever. I would not recommend this site for anyone because it is such a problem to get what’s yours back