Hello, good day, and thank you for your question. Sorry to know about this. Please check and try this on a different browser or try using inPrivate or Incognito browsing and also check and try this on a different device and if the issue still persist, please visit the link below with regards to requesting for a refund.
https://help.minecraft.net/hc/en-us/articles/360030463592-Request-a-Minecraft-Refund