BERLIN: Contacting and communicating with companies when you have a complaint is often anything but easy.... This is especially true if the chatbots aren't of the learning kind, but rather have a fixed collection of predefined answers onboard. Venting your anger at a company on Twitter, Instagram or Facebook sounds tempting and it can help to build up public pressure.... " These people were locked out of using the platform, comments were simply deleted, and one consumer even had his customer a