All companies (and people) make mistakes; what is important and insightful is how they attempt to fix them.
A problem with a single product would not necessarily discourage me from doing business with a company, but if a customer service representative attacked me in a completely unprofessional manner, then that would pretty much seal the deal.
If those text messages are real, they provide some tremendously important information about the company; enough to allow me to form an opinion. Perhaps the company is no longer being run as it once was?