I still haven’t received my refund
You won't receive a dime!
why? whose side are you on?
It's not about taking sides, it's about what can and can't be proved, that's the main issue here. Unfortunately you can't prove this happened to you so it's hard to pick a side. The story also sounds so strange. In 6 years at stake I have never encountered anything like this, and I have made a lot of sports bets, trust me.
Stake doesn't need to scam players for such small amounts, and if the bet had won you would have been paid as well. Also, if you would have seen the bet getting accepted, you still would have lost it, don't forget about that. So the result didn't change, you would have lost no matter what.
And, as it has been mentioned before, getting the bet rejected once and not trying to put it down the bet again. But instead instantly closing the window sounds a bit off, don't you think? Not saying you are lying, but it just feels very strange cause that's not normal behavior.