Online order cancelled without email notification

I have ordered Mac Book PRO 2 times from Apple Canada website and both time my order got cancelled,

Order 1 - W5*****632

Order 2 - W5*****054

Both time order got cancelled with status "Check with your bank". When I have check with bank, they said transaction is approve but Apple has not claim money.

Could anyone tell me what could be the issue.

I am in US and ordering from Apple Canada website.

Thanks,

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