Scammed after calling QuickBooks Checking support, US$5000 gone.

I opened a business checking account with QuickBooks about 3 years ago. Everything went smooth all along without issue. Two weeks ago, I was looking to download my 1099-INT but I wouldn't find it. Their chatbot told me to call their support and gave me a phone number. After on the call for an hour, bounced 5 different times to several support reps from offshore, they offered to escalate the ticket for me.

The rep spotted I had a different phone number on file and asked if he could call my number on file to verify I was the account owner. I never mentioned my company phone number to anyone that day, so he must had been looking at my account in their system. 10 seconds later I received the call on the other line from the same rep with the same matching incoming caller ID. He said he will send me a code to authorize viewing my account and attached the escalation.

I hesitated but ended up gave him to code. While he said he was typing the ticket details, I managed to find the tax form in my account so I told the rep to stop.

He then asked if I had my debit card in my possession and its 4 digit to verify as security precaution. The alarm in my head fired up crazy, and I didn't gave him anything.

After I hang up, refresh my account webpage and discovered $5000 transferred out to some unknown card ending , also a $75 fee for using instant transfer. No email notification, no text, no alert. I always received email notification whenever withdrawal or deposit with that account. This time, as if someone had permission in the system to suppress it.

I filed a local police report and submitted a dispute to Green Dot Bank mailbox in Ohio already which turned out it was the bank behind QuickBooks business checking.  They received my dispute form with supporting docs on Friday. They closed my case and denied it on Monday without sending any email or letter for explanation.

Here we are now, I’m not out of the bind yet.  Just want to post it here warn others. I'm topically very cautious about scams & security but this time it completely caught me off guard thou since it was the phone number provided by their chatbot.