I will stop responding here now for the sake of everyone
I will try to contact stunna in private and get this resolved. If I can get some replies and find a suitable outcome I will not post it here, but will update if there is no contact.
As the owner of primedice I think its his responsibility to deal with this error and the harsh outcome it likely had on my bets
A member of support replied to me saying that they recommend changing the client seed in order to increase randomness (in other words what happened is a good thing)
This is actually why I am requesting the refund and shows that there is more to winning than just the chance of win %.
The error forced my seed to be changed without my knowledge therefore had an impact on the result of my rolls and on my choice of bets. I didn't want randomness to be increased, I wanted to play with the same seed I started with and based my bets on previous rolls on the old seed. If this actually helps is irrelevant, its how I play. If I had done the same bets with the old seed (like I assumed I was doing) the results would have been different and there's a very good chance I'd still have my BTC.
Still no reply from Stunna but I understand he is probably busy. I hope he will sort this out as it was an error on his site so should take responsibility for it. I would accept my bets after the error if I knew the seed had been changed, but I didn't know this as there was nothing to tell me it had been.