Bests & Worsts Reviews from Amazon

Tension feels like it broke after my very FIRST use! I'm so aggravated about this bike, I tried fixing it and nothing, I posted a complaint and no response, is there even a warranty in this? The design is flawed and the tension won't stay in the hole. I've spent hours disassembling andtrying to put it back and my last attempt I even tried putting glue but it got loose again. I'm feeling scammed on this $100+ purchased!