payment has been paid and approved but at the same time the seller by mistake cancelled the payment

mnmichael Member Posts: 1
Hello, as the title says, Iam the buyer and paid a payment request. After some time the payment was approved. However the seller told me that by mistake had cancelled the payment and send another one with different amount. I did pay the first one. And also the amount has been committed ( hold from the bank ). Do anyone knows what will be happen. The money will return to my debit card account to the seller account or will be lost.
thanks for your answers