Bad quality tires

This complaint is regarding tires purchased at Tiger Wheel & Tire, on 20 Dec 2014. I purchased a set of Yokohama dB V550 195/65/R15. I drive a 2013 Honda Civic 1.6 Comfort. I would like to lodge a complaint and am seeking reimbursement for the replacement of this set. After purchasing this set of tires I experienced problems with the balancing. After returning to the dealer about 4 times the problem persisted. I am experiencing high vibrations from the tires at higher speeds. The dealer was unable to solve the problem. I went about inspecting the tires myself, upon which I found, to my horror, that the tires are disintegrating. The tire causing the vibrations has cut marks on the surface of the tire. There are also pieces of the surface that has been torn off. A spot on the inside of the tire surface that has been torn. This set of tires has only done 5000km with city & traffic driving conditions. I am completely dissatisfied with the dealer's inability to solve this and am completely disappointed with the quality of the tires. I purchased these tires at great cost and have been inconvenienced during my personal time and working hours. I hope this issue gets your urgent attention.