I had issues with defective aligners from day one. Their team immediately responded and stated I would receive a full set of replacement aligners. So seemed like all was well. Since then, it has been 6 months of me chasing them for updates and information, with little follow through. SO MUCH of my time has been wasted, not to mention the discomfort of defective aligners that I had to correct myself (a process they confirmed I was allowed to do). They have not even been forth coming with basic information, leaving a constant trail of confusion for me to follow up on. They were very friendly to deal with, till I got sick of being polite and got very direct about all my issues. To date, I still don't have this resolved. I have done everything that was asked of me and while they are now being more immediate in their responses, I am still having to actively pursue basic info and fighting for clarity. Not to mention the halt in my progress. I am beyond sick dealing with them and so today I asked for a full refund, which they declined to do. I'm now being held ransom to their poor service and low-quality product.