Worst Ever Experience

Customer services staff convinced me to pay a deposit for a laser surgery when I had not managed to book a day off from work, but the guy I dealt with said the slot will I wanted to get the surgery done will be gone so I should pay a deposit and if my holiday is not authorised I can get a full refund. But guess what? This happened on 21.11.15 and to date I still have not had my refund. Upon ringing today I was told there is an xmas backlog and my money will not be refunded until 19th of Jan now! This is ridiculous. First of all the staff when taking deposit do not mention that a refund takes 28days to process and when I tried to explain this to the refunds team they said u had the terms, which sadly I was only given after the payment was taken off my card but accordingly to them I have still entered a contract (without being given the terms prior or having been informed about these terms verbally??) This is appalling! And more to that, 28days have gone but they want to delay the refund by another +2 weeks? And what compensation do I get? Nothing... This is totally unacceptable! Would not recommend them to anyone or use them ever again !! Also I am going to take this case further if my money is not refunded asap !!
And this was is the experience just about my refund. Prior to this, I was very surprised with the prices I was quoted, at first they started off with a price ranging to nearly £5k for both eyes for a 20:20 vision which then got slashed to less than £3k when I said I could not afford it !! Nearly £2k discount given instantly? How they could afford it, or are there prices hiked up, just makes me wonder ?!!
Please guys, all I would say is 'Beware'...