Echo Dot Puts Songs In Wrong Playlist

[CChamp]

Hi all, I have several Dot 2nd generations and for quite some time now when Alexa is playing a song and I say "Alexa, add this to my playlist" she says "to which playlist" and I say "rock". She then says "ok, adding to COUNTRY". If I try it again she will add it to a different playlist. She refuses to put it in the playlist that I said. This is happening on all my dots. I have cleaned and reset them and still no luck. Has anyone else had this problem? Thanks in advance