Hey all, new to this forum!

I bought a frame and rigid fork last June from XmiPlay (from bert, who was quite nice to work with). Frame came super fast, built up quickly and put about 1000 miles on it.

Then during a ride where my buddies were on cross bikes (so nothing crazy), I thought I had a flat in the rear but it turns out the frame failed at the seatstays/seattube interface. I'm not too heavy (160lbs) and have a dual suspension bike that I do stupid things on

Anyway, the IP256 I bought has a 2 year warranty. So I reach out to Bert who was "ready" to ship me a new bike, but as soon as I asked if I had to pay shipping, I've never got another email. Now 3 weeks later (and several emails to Bert), I've still not heard anything.

Has anyone here had any luck warrantying these frames?

(picture of failure here: https://www.dropbox.com/s/5hmi6y9nf4fpfon/20151214_190739116_iOS.jpg?dl=0)