The only thing that really is trust abuse is lying, with a few exceptions. Neither of your negative feedbacks say anything about doing a trade with you, it just says that you are annoying. Its not really abuse.

If I left you a negative because you said the word lemon, and I have a deep seeded hatred for lemons, its not really "abuse" as long as I don't say, this guy scammed my cat! The feedback that you got is subjectively accurate. My judgement might be called into question over giving out negatives to those who say lemon, but as long as the feedback is transparent and not dishonest, its not really abuse.

Not all negative feedback is weighed equally. Some people have negative feedback for being racist, account farming, owning multiple accounts,being annoying, scamming etc.