phone defect

Has promised to honor trade in promotion value and restocking fee for sending me a phone with a defect, they told me to call back after I send my phone that I received with a defect. I am worried that they will give me a hard time. Please pray everything gets resolved without any complications.

I had to return my phone twice because it came with the defect, never happened before, but they have promised that I will get my promotional credit for trading in my phone and the restocking fee, I get worried that they will not honor their words.. Please pray that it goes well without any...