Grubhub Inside Sales Manager interview questions

I saw the role posted on LinkedIn and allied right away. I'm a big fan and customer of Grubhub and felt my background would have great impact. I heard from the recruiter very quickly and we set up a time to speak about a week later. Five minutes before the interview she cancelled and asked for another set of dates. I sent three open time times...Nothing. I emailed her three more times after that and heard nothing. Nothing. I can't believe this is how they treat candidates. Tell me no, tell me its filled or that plans have changed. But respect the candidates time. Reviewing some of the feedback on interviews this seems to happen more than than it doesn't. Things happen but cancelling the interview minutes before it happens and then ignoring the candidate altogether certainly raises red flags. The other disappointing aspect is that I'm a customer and will now associate this experience if and when I order though Grubhub. Great service but I'm unimpressed with the company.