Flawed system and poor service

I ordered something online and when I got to checkout my online purchase limit was exceeded but order went through with pending payment status then I updated my limits then went to complete the payment then the payment went through. But order status on their system is still pending payment, but I received email confirmation of payment. but on the same email the status of the item is cancelled. I tried calling but my phone got hang before I could speak to the anyone, it was around 4pm.