So, i bought i Minecraft retail gift card and when i used it i got the demo version.

i used my minecraft pre-paid card and the download went well, until i opened the system and said i only had the demo version. when i clicked "get minecraft" on the launcher page, it took me to a page in the mojang website that said "you already have minecraft!" I am hoping for answers to what i can do. I still have the pre-paid card with me until future notice.

sincerely,
Leo