I'm still missing my hifi-man RE-00 headphones from August 2016. I've contacted support five times, and heard nothing.
I feel you. Stuff like this really makes the customer unhappy. Massdrop is going to lose a dedicated 3-year customer soon if this continues. They really need customer support. I don't know what happened, when I had an issue a couple of years the support was immediate and fantastic. Growing pains?
Either way, they need a dedicated support team. Or if they have one, they need to get their act together. You are a large company now, with lots of people counting on your team to provide some kind of customer support.
If this is the kind of support we can expect to receive in the future, I'm going to stop telling acquaintances about Massdrop, and use an alternative service.