MetroPCS Sold me defective cellphone Dallas Texas

bought a phone from metropcs,Been a customer for 6-years.hard it for a month or less the phone batteries burn ,the phone was burn,I had insurnce which cost me $6 a month for over a year,They charge me $40.the new phone last 2 months ,the screen burn out on this one one,I lost all my information including all my pictures.again they charge me$40 ,this one last 3weeks,I called customer service,they tranffers me to warrnty,they said go back to store where I bought it and get another model because they were having troubles with 2 of their phone the store said no,called service again ,they sent me a cheap phone,was charged$15-activation +$50 monthly fee for no service..help