WORST online shopping experience EVER!!!!!

Absolutely the worst online shopping experience I have ever had in my entire online shopping life!!!!!! I ordered a Fitness tracker online on the 14th and the system kept indicating that it doesn't recognize my ID, I refreshed my browser and on the 3rd time the order was finalized i.e 1(One) huawei A2 band. Which I confirmed in my shopping cart before I finalized payment. Next thing for some reason beyond me, I get a notification that 2x the amount was processed off my credit card. Upon checking the order, I note that my order was duplicated, I immediately log a query via their online process. Next day I get a lame response from a consultant practically stating the obvious "2 Items was added to your basket" not sure how this response was supposed to be a resolution to my query. My instruction was quite clear on the query "Cancel the whole order and refund my full amount"

I decided to call in on the 15th and requested for a refund to which I am told that it will take 7-10 days to process. I then request that rather the order be amended to 1 item and a refund to be processed for the balance, the consultant confirms that this will be done and i would get an email confirmation of same. Nothing was received to this effect, instead on the 18th I get an email advising that the order is on the way for delivery. I decide to just wait for the order as per the address provided. (which I had also changed but only the 1st address line updated). nothing was delivered instead AGAIN I get an email advising that the order was "delivered successfully" I tried to log a complaint on the site...I get a "please try again later" on the 19th I call AGAIN to follow up not necessarily assisted I get told the order will be cancelled and an instruction processed for my refund. each time I call to follow up I get promises of being called back. It's 7 days later and still someone is calling me back. Hopefully I will get a response this year still...

Pathetic service in the history of online shopping