well the thing is their support not letting me talk wih their manager nor they forward my messages to their managers

nor they giving the freespin re-run again.
i have solid internet connection its cable and i live in scandinavia so we dont have crappy connections here.
The starting point should be the play logs from that session. This will show if this was merely a display error, or something more fundamental at their end. If it's the former, you just need to confirm that you were paid what was due from the bonus round, even though the display didn't show it.
The zero payout and screen full of wilds would be down to the software not retrieving the last known state of the game, thus it shows zero, not what you actually won from the free spins. It doesn't necessarily mean you received nothing at all from 10 free spins, but this is a possibility, I have often received nothing at all from a free spin round on a number of slots, mostly Microgaming.
If the spins played out properly, then no rerun is due. Other than for good will, no compensation is due either. The better casinos though will offer something like a free chip when they have identified errors at their end, or poor handling of a problem by CS.
By refusing to forward this issue up the chain, CS are treating this issue as trivial, but this is wrong. NO issue involving a software fault on a real money game should be kept from management by front line CS, nor should the player be frozen out of the loop when it comes to resolving the issue.
Freeze a player out when they have a problem with the software that they believe has cost them money, and you have a breeding ground for suspicions that the casino is trying to dodge their responsibilities.
If there is a connectivity issue as well, this too needs to be looked into. If the player has a "rock solid" broadband connection, they are not going to believe any accusations from casinos that the problem is at their end.
Bet At, in their baptism thread, had a severe problem with players complaining about connectivity and "casino error 2". It was quickly admitted by the rep that this was nothing to do with the user's broadband or PC, but down to the casino servers not having enough bandwidth to cope, and so was constantly dropping connections to random players.
It could just as easily be the case here, with those disconnects due to an unusually high load on the casino servers, or some routing pinch point between the server and players. This tends to happen when casinos launch a promotion that proves to be more popular than they had expected.
If the casino was updating files in the background at the time, the frequent disconnects could have lead to a corrupt file being introduced.