The ex Gatwick people get EC 261 moolah, and you get what they gave you. I am surprised they were slow on Twitter. I hector them on Twitter and they are usually fast to respond. Try a public post about how they delay 5 people 24 hours, don't give proper hotels and a "refund" that you can't use and see if they DM you with some chat which I suspect they will do.
The fact the next day the same flight went on time is completely unrelated to the issue, isn't it? They are not going to delay WS003 forever due to yours being late.
Better advice, hindsight mind you would have been to research the woeful performance of WS flights to and from the UK and flown on anything else like a kite, or zeppelin.
What were the 7? Phone, e-mail, Facebook, Twitter, no idea how Snapchat would do anything but the other two were what?