Why can't I pay with my Xbox credit?

Ma
- in Xbox
1

I had a due xbox live payment of 6.99 euro, so today I bought credit cards and so my account balance increased to 34.02 euro when I pay the money woölte there's a new account balance of -27.03 euro and me should add an additional payment methide.

Can someone help me please is important!

Ma

Sorry for the spelling was in a hurry (;