poor quality machine

we bought an Orbitrek machine last year from game in Pavilion. the product broke, the bolt broke off from the peddle. we took it back to them as it cannot be un*****ed from the part at which it broke. we were really unhappy and disappointed with the purchase. we were refunded our full money and went to makro in springfield. we then was convinced by the salesman that the orbitrek was assembled different and theirs was of a higher standard. we put our faith in them and decided to purchase a new orbitrek. now after 9 months it has broke again in the very same place. we have booked it in, as it is still under warranty. the service number is ********** . after buying two separate machines from two different stores the product still fails. we are under the prescribed weight for the machine , which leads me to believe that this is a design flaw or poor material choice used. i am tired of this product, it keeps breaking and i cannot understand why. it seems to me then that there is a misrepresentation of the prescribed weight if it cannot cope under stresses and this misinformation by verimark has caused this machine to break constantly. i would like to get refunded, i have put my faith twice in this machine and it has failed me. i would highly recommend that a design review be done rather than a technical analysis on my machine as it is not adequately suitable for the average consumer or any age group as the adverti*****t states. according to cpa, we are entitled for a refund after 6 months, seeing as this falls out of the six months, i would really like to ask how you ensure customer satisfaction? how do you guarantee me against your design flaw? it seems as if i have been sucked into this cycle of your two year guarantee, which means nothing if the product is designed to fail. I am tired and frustrated with this product.please call me to resolve this.