Bad quality Sun Glasses, bad response from staff

<p>I have owned roughly 15 pairs of Bondiblu sun glasses over the past couple of years, normally replacing them only once the glass has been scratched or the actual glasses been ******, however in the past 3 months I have had 2 glasses break in very similar fashion in similar places, which raises concern if the quality of the glasses has dropped lately. I’ve attached photos of my Sunglasses that broke this morning purely by taking the of my head, without any force or hitting them on something. The other pair was exactly the same scenario with my wife, I’ve replace her broken pair with new but similar sunglasses to the ones in the picture. I suppose only time will tell if they will survive. I am very hesitant to purchase a new pair Bondiblu’s, and would like hear from you guys if this problem was only with a certain batch or has the quality dropped overall and how can I avoid getting another faulty pair of glasses. I've sent a similar message as above to ********** without any repsonse. I am of the opinion that the quality of the brand is reducing, and wont easily purchase another pair.</p>