JIT Transportation c/o ROKU ROKU New Product completely dead less than 90 days from purchasing Milpitas California

On March 16, 2017 I ordered, thru email, a brand new Roku Premiere that was advertised for $77.99 and after taxes and discount coupon I paid a total of $53.86. The product was brand new and no information was provided about service warrantee or the like. Thhe product was receied on 3/24 and was connected too the TV couple of weeks later. The performance was very unstable and system kept turing off for no apparant reason. When I realize that I tried to disconnect then connect the power to ROKU start working and few days later gives up. For almost three months that pattern continued at which time I contacted customer service, via email since no phone is available, and I recived the worest customer service any one can imagine and they cliamed we cannot take back after one month from purchase. I requested RMA (Return Merchendise Authorization and ignored my request, I gave them an ultimatem to take back and refund my money and copletely ignored any correspondace from me, Very bad unrelaibe product and even worse management team.