Xfinity charged to my credit card

Hi Team,

I am fed up talking to all your customer service agent, be it on phone, chat or any other service. I have been charged twice to my credit card(A) which is never on file for monthly payment and there is no such amount i can see on my account. I have credit card(B) on file. I also received an email stating that $62.03 and $63.03 will be charged to credit card(A)  but no customer care was able to figure out how this amount was charged . I am really surprised that such big company not able to figure out how xfinity charged those amount and why ? and they cannot refund the amount as they cannot see it in my account.

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