HubSpot Inbound Certification Fill in the blank. _________ of customers will never do business with a company again after one negative experience. April 14, 2020Knowledge GlassComments Off on Fill in the blank. _________ of customers will never do business with a company again after one negative experience. 61% 46% 51% 34% Download HubSpot Inbound Certification Exam Answers (PDF)