Xbox live paid 4 times credit card 4 times charged and 4 times cancelled by microsoft

Xbox live paid 4 times credit card 4 times charged and 4 times cancelled by microsoft.... I dont know what to do, my credit card was charged 4 times and 4 times my xbox live subscription was cancelled... I was thinking that my credit card was not being charged
so every time that I've received the ms email telling me that the subscription was cancelled I've tried to bought again. But the 4 times was charged and the worst is that now I doesnt even have a subscription active!!!!!!!

:)

 

Comprei, cobrou, nao chego minha live! | Bought, charged, not get my live!

COMPREI A LIVE PELO CARTAO DE CREDITO, RECEBI UM EMAIL DIZENDO QUE FOI CANCELADO, COMPREI DENOVO, DISSE QUE FOI CANCELADO, ISSO 4 VEZES, CHEGANDO A FATURA DO CARTÃO DE CRÉDITO CONSTA AS 4 COMPRAS NO VALOR DE 16REAIS , MAIS NAO RECEBI OS 4 MESES DA LIVE

AJUDA AI NÉ

[Translation:

I BOUGHT the LIVE by
CREDIT CARD, I RECEIVED an EMAIL SAYING IT was
CANCELLED, I BOUGHT AGAIN, SAID IT was
CANCELED, THIS 4 TIMES,
CREDIT CARD is the 4 PURCHASES
AMOUNTING to 16REAIS, MOST DO NOT RECEIVE
4 MONTHS of LIVE. HELP
AI HUH]

 

Headache with text support/gamertag change

My brother changed my gamertag while I was out with my credit card. I been trying to have them change it back but they have charged my credit card x2 times and I have been disconnected on 4 times already. PLEASE HELP!