What is the reputation of sunshine communication on the fourth floor of Tianjin Times Digital Plaza, and what is the after-sales service?

The sellers on the fourth floor of Times really dare not compliment, and there is no fierce supervision department. In bubble net and Zhongguancun, I saw a company called "Sunshine Communication" bought a 4S in July last year, saying it was owned by the Bank of China (without warranty). After talking for seven days, the other party always couldn't hear. I went to see him and said that the package needed to be returned to the factory for testing. I didn't say there was a problem. I said it was my sim card, and the problem of reissue the small card was not solved. I took it for testing for a week and told me that there was something wrong with the motherboard and I had to return to the factory. I said I didn't want it. He said he couldn't refund the money. Where did he sell it? Second-hand loss 1 000 yuan. At that time, he didn't agree to let xiu. Unexpectedly, when he brought it back a month later, the home button was crossed, and the machine didn't look like a new one. The clerk who received my machine before the boss said that he had something to do, and he didn't know what the machine was like before. He bought one (Samsung i9 100 sold in their store is said to be the Asia-Pacific version. After Samsung's after-sales service appraisal, it is actually the Korean version of the refurbished machine engineering model that shows Korean but has no Korean antenna. )