LastMinute.com review: Option to use a double booked flight after a 12 month period

I recently made a booking on LM website and thought I had until next September to cancel it for free. On the same evening I then placed a booking for two passengers that were on the initial first booking. I then thought I could cancel the booking made in error the next day. LM told me the flight was non cancellable/ I went back on the website to have a look and found that the cancellation policy is hidden. I was able to confirm my booking without any information being clearly stated about the flights being non cancellable. I felt that had this information been transparent and not hidden I would have seen that the flights were non cancellable and I wouldn't have made the second booking for two of the same passengers. The reason I made a second booking was because I had meant to book half board rather than b&b and wanted to add the airport shuttle on. This time I chose a non-cancellable rate happy with my booking choice. I tried to explain the mistake I made and I was told the flights are non cancellable. I went back onto the site again to find that IF you go to the left of the screen and hover over a really faint (i) a pop up box appears to say the flights are non refundable. This ONLY popped up if you go to the that area on the left. I was able to confirm my booking without any pop ups which is why I was completely unaware the flights were non refundable.

There is a green timer on the right hand side of the screen, putting unnecessary pressure on the booker. The cancellation policy is in a faded font, half the size of the rest of the page and you have to click a link to get to the them. It isn't transparent at all and easily missed as I had when placing my booking. I had to ask my credit card company to increase my credit limit to then pay for two lots of bookings to the same hotel on the same dates to the same hotel. I have been able to cancel the accommodation with them for the additional booking. I have asked if I can change the flights to another destination and have been told no and that it has to be the same destination. I then asked if I can change the date and they have said I need to use the flights by the start of October next year. This isn't fair as I am already going to that destination in September. They can see it's an incorrect booking done in error and I cannot afford to just throw away £1500 which is what they are charging me for the 3 return flights to Ibiza.I thinks it's really not on that they want me to pay almost £2000 for me and my friend and then another £1526 for 3 empty seats on a plane. I put it down to me having peri-menopause in making a mistake when booking but after checking the LM website again it is very obvious that things are hidden on the site when booking. It is very misleading and the flight non cancellable conditions need to be clear and not just a pop up that only appears if you go to one side of the page.