If you are looking for a more durable frame, maybe try the acetate frames such as the Island Time, Peahi, etc...
I have 3 pairs of Island Times with 3 different lenses and they have held up to ANY abuse I have given them and trust me, I have done extreme sports with them such as sky diving, mountain climbing, hiking, mountain biking, tennis, etc...I have not had a single problem. And these frames offer MJ's Superthin glass which has the BEST optical quality of any of their lenses.
If you want ULTIMATE comfort then try their lightest sport frames (a bit fragile) such as the Breakwalls, Lighthouse, Sugar Beach, etc...Again, these are more fragile but due to weight and design, there js absolutely NOTHING more comfortable. And the optical quality is almost on par with their Superthin Glass.
Lastly, if you want a good compromise of these 2 types of frames (comfort and durability) try the Kuapo Gap or similar.
The lenses are the secret sauce for MJ so it depends on what you want, what you use them for, how much tint, etc...
The best multi-purpose lens is their HCL (brown lens) as it fits most situations but I recommend getting a few different lenses for different uses and situations.
I find the HT (high contrast) lens best for golf and tennis as it intensifies the details but still remains bright by letting it more light. The grey and Maui blue lenses are perfect for super bright and sunny days. Maui rose is probably best for fast paced action sports.
You can read all of this on their website or talk to them directly. I don't know why you have had problems with their customer service as I find them even better than Oakley and remember I was sponsored by Oakley.
I have had a few pairs of MJ sunglasses replaced due to breakage which was my fault but they replaced them free of charge in any case.
Give them another try but make sure you pick the frames that best suits your needs. Many people buy sunglasses due to looks but forget that they are tools like a watch or any other accessory which qualifies as a tool so it is best to pick the ones that best adapt to your lifestyle and needs.
Good luck 😉👍