Andrew Green has won a High Court battle against Betfred, after the betting firm refused to pay a £1.7 million jackpot he'd won in an online casino.
Green, 54, bagged the jackpot back in January 2018, when he had been playing a blackjack game on his phone.
Betfred refused to pay out, claiming an error meant the game was not operating properly and that the win was therefore not 'legitimate'.
But after taking the high street bookmakers on in a legal battle to claim his winnings, the High Court ended up ruling in Green's favour, with judge Mrs Justice Foster saying the company had no grounds for witholding payment.
Speaking after the judgment, Green - who is from Lincolnshire - told the Press Association: "I'm numb, very numb.
"Pleased it's over and done with, still so unreal.
"I don't know what to say, it's just unreal, we finally got it to an end, there's relief."
He continued: "This to me today isn't just a win for me, it's a win for everybody that they can't treat people like this.
"People who use these platforms hopefully will realise with my story there is justice out there and don't be bullied by these people and in the end, justice will be theirs.
"It will happen as it has for me."
Green won the huge sum of Magic Seven on Betfred's website, but the company had refused to pay out, saying in a statement at the time: "Betfred loves to pay out all our jackpot winners - both big and small.
"Unfortunately, and as Mr Green is aware, a new game release suffered a software malfunction in January this year and no legitimate jackpot win occurred."
Green added: "I did nothing wrong, I played a game.
"I was congratulated for five days on being a millionaire, and then it was snatched away from me."
According to the BBC, he also said in a statement that the three-year row over the payout made him wish he'd never won.
"My physical health has also suffered badly, and I sometimes wished I'd never won this money, because it was just making my life a misery," he said.
"But today, I feel like the world has been lifted off my shoulders and I feel so incredibly happy and relieved."
According to the BBC, Betfred has said it would not appeal against the ruling, and apologised for the delay in Green receiving his money.