RingCentral Senior Manager of Marketing Analytics & Insights interview questions

A recruiter reached out to me on LinkedIn and scheduled a 30 minute introductory RingCentral meeting with a different recruiter for the following week. I dialed into the meeting and waited for 15 minutes but nobody showed. When I sent an email to all of the recruiters involved letting them know that they stood me up, I received a text message from the initial recruiter that the position had been filled. I found the entire experience extremely unprofessional and frankly disrespectful, and shared that feedback directly with the talent resourcing team, but received no apology or explanation.