Superbalist worst online experience

I have never experienced such a horrible service in my entire life. I have bought a PUMA swimsuit from Superbalist and it confirmed availability; upon receipt of my order I received a totally different swimwear from what was on the page. I logged an exchange and again on delivery, they delivered the same swimwear that I have logged an exchange for. I decided to send an email and got feedback that the swimwear I am looking for is out of stock an that they are experiencing item error hence I keep on getting the wrong item. I then requested that a refund be processed. Someone logged a refund for an item that I bought from them a while ago and I sent an email to say the wrong refund item was raised and I was told it will be fixed. I return the wrong swimwear that was delivered. An acknowledgement of receipt of the returned items was sent to me then I noticed that the refund processed was a less amount from what I have returned. Today marks more than 2 week and still failing to refund the full amount of the items that I bought and was out of stock. I just got an email that said a refund was processed of the amount lesser than what I returned, last week another person sent me an email that the full amount of the actual item has been processed and will take 5 days to clear, working days was yesterday. For a business that works with online shopping and no one seems to know what is happening on their own system. I have been using Superbalist services for the past 3 years and this is the first time I experience such incompetency and bad service. Every time I make a follow-up mail, someone new deal with my issue and everyone is saying a different story.