Defective Huawei GT6 and No Service from Huawei

I purchased a brand new fitness device... brand new as in a model just launched ..I was very specific about my requirements...I swim, I cycle and I run... and I Tri! And I need all of these to be tracked. I was persuaded by the salesman to consider the Huawei rather than upgrade my Garmin He was very convincing and gave all the right answers in terms of my needs. Well... the first device multip**** my swimming mileage by some random factor. And different everytime. After attempting various things such as resetting the factory defaults, etc they swapped the device out. The new one calculates my swimming accurately. Before confirming that I was now happy I said I needed to test a Tri.... which I did...450m swim, 8km cycle, 3.5 km run. Per my brand new, fancy Huawei GT6, I had completed an 11km swim. And only 1700-or so steps for the entire day. This was over a week ago. I am in contact with an agent who has escalated it to their development team. And I wait... meanwhile missing out on Vitality points and other benefits. I am Not! happy