Once the complaint has been fixed to the satisfaction of the user, the complaint could be closed. However, to further build the relationship between your users and your company, offering compensation can be a very strong tool. The compensation should not be financial, but should show that you truly care about the time your user has had to waste to be able to use your service or product to a satisfactory level. Flowers, an apology letter, a coupon, and similar gestures are powerful tools to reinforce the relationship between your customer and your company. This compensation should not be announced during the fix process and come only after the customer has been helped to a satisfactory level, or it will seem like a method to keep the user silent and he or she may feel manipulated. You send them the compensation to show that you care about the complaint and to thank them for the effort to address it, not to keep them quiet.