It’s important to say you’re sorry when you’ve made an error but some people use it as an excuse to attack those who’ve truly asked for forgiveness. When this occurs it usually makes the person attacking looking petty (unless it’s a major wrong) and makes the individual asking for repentance less likely to do it in the future. It’s also true that some people say they’re sorry as a way to get out of a situation. This can make it difficult to know whether you should accept their forgiveness or not. Here is the way I usually handle such a situation.
(1) If there is no “track record” I usually will accept their words as if I said them.
(2) I still keep in the back of my mind what they’ve done wrong
(3) Finally I set in motion certain ways to prevent myself from being hurt from this individual in the future or lesson the blow should they act the same or similar way in the future.