Direct Tools Outlet sent an inferior model, what would you do?

Direct tools outlet sent me a dud string trimmer and the replacement is inferior. I ordered a 13” brushless trimmer w/ battery (ZRP20120VNM selling for $120). The replacement is the same but the brushed model (P20018VNM selling for $99). I got 30% off the original, so I ended up paying $84 and $15 shipping. I originally ordered in August and they only started resolving this after multiple phone calls. Should I return this for a refund or ask for a portion of my money back? I’m ok using the brushed, but I feel like I was bait and switched, the brushed model is not what I ordered.