Bitbuy offers phone support, on the phone number 1.888.770.COIN.
Phone support is available M-F, 9am to 7pm
There is no other phone number for Bitbuy support.
To protect your Bitbuy account, make sure you do not interact with any 3rd party support services.
If you are contacted by anyone claiming to be Bitbuy and you are suspicious of their legitimacy, please email firstname.lastname@example.org with the details.