I laughed at "updating the blockchain".

They just don't want to resolve the issue because they are saying I placed that bet (Girona- Cadiz), and I saw the same thing happened to another user so I don't think it's a coincidence what they are doing.

The fact that they changed the bets is also alarming. How did they (as they say) wrongly graded exactly that bet that I made big profit on, and not some other bet?
They just don't want to pay out winning players and are using same tactics as other known scamming bookies.

Paying out once or 2-3 times and then saying why would they do that and scam someone later is bullshit. That's exactly what they would do.