When I tried to give EA money, they wouldn't take it.

So, I came back to the game like a day or so ago. I found out that there was an event going on which had awesome skins as well as a mythic Heirloom which could be equipped on any champion. I thought to myself 'I really want these' so I "Tried" to give EA whatever I could to complete the event. It wasn't until around the 8 hour mark of the event that I tried to make 1 more purchase that I started to lose hope. I tried three different bank accounts to try and make the purchase, but nothing went through. I am without these items. I will never get them now, because of an error on EA. Is there anyway this could get resolved? I feel like this is unreasonable even for them.