Hey there Stormofkiss.
I am sorry to hear that you feel frustrated about not being able to get Regice. However, you were still lucky to be given the chance to battle Regice after the event had ended. Unfortunately Shamac Claus was removed due to a bug with the npc that was exploited and not reported, and thus it's not possible to capture Regice now if you lost your chance to it. I am sorry to have to inform you of this. In the future for events, and when you try to obtain legendaries, I highly recommend asking around or looking for a guide to assist you so that way you can be properly prepared in the future.
Secondly, I would like to ask you to read the Forum Rules. Swearing, flaming, and toxicity are not allowed on our forums, and I would like to ask you to not do so in the future. I have gone ahead and edited your post to remove the profanity. English is the official language of PRO, you can read more about that here. That being said, I will now lock this topic, sorry that you lost your chance to get Regice, and I hope you enjoy the rest of your week.
[glow=purple]-Locked-[/glow]