This is my list of companies that will ban your business account if they know you're involved with Bitcoin. (NOT ICO's... but Bitcoin specifically)
ChimpMail.com
ConstantContact.com
SendInBlue.com
Twitter.com (they "will" ban small Bitcoin businesses)
Please feel free to chime in if you've had any businesses accounts closed due to Bitcoin.
Did they say why they ban your business account if you are involved in BTC? I dont see an official statement from Twitter or from the other smaller services.
But the ICOs are ok for them?