It seems Coinbase is in the habit of double posting transactions.
They double posted transactions dating back a month for me last night. These are not authorizations, they are posted to account history.
According to my bank, they have received a large amount of these calls this morning.
Without customer service to speak with, we are left out to dry. Bank asks if you have done business with them before; you answer yes, bank tells you this is not fraud, contact the merchant.
It took a while to convince my bank they have no customer service, and this is basically fraud. I'm not sure what will happen, but it is helluva inconvenient.
I always delete all banking information when finished with any exchange but especially coinbase.
Go to privacy.com
You can create a custom card for your exchange and limit its spending to $1 when you’re done.