@sarabjeet590 as the others have mentioned when you say you were charged twice, were you trying to change your plan, or was this part of your normal payment cycle?
Also, if you're looking at your online credit card statement, sometimes you'll see the charge plus another one sitting in pending, just give it an extra day or two days and the pending one will disappear, I sometimes see that in my PC Mastercard online account.
If the actual payments have cleared and it is truly 2 charges on your account, then you'll need to message a MOD.
