its ok to use WTB in this case imo. Even if it is not ok, there is NO NEED AT ALL to start getting abusive. But , there will always be toxic ppl who just want to see the world burn (speaking from personal experiences of receiving abusive messages myself), and imo, the best reaction is to just block them (and report them if u want to). They are not worth your time. If you reply to them, they will just drag you down to their level of stupidity and beat u with their experience of stupidity.