Help: Exchange or refund of a multiple-time repaired brand new guitar

I bought a Musicman guitar end of September 2018. Immediately after I took it home, I started having issues with this guitar. It has been in repair shop of the store I bought it from 4 times already and new issues keep arising. Last time I took the guitar for its last repair to the store, the luthier guy could not care at all, and threw the guitar bridge (which was disassembled) multiple times on the guitar, that caused 6 dents on the guitar body’s surface. They are visible. The previous time it was in repair, I picked the guitar up with a few more scratches, dings, and dents than it already had when I initially bought the guitar. You could imagine that my beloved Musicman, the guitar of my dreams, is in pretty bad state right now. Its electronics are messed up, it’s missing parts that the customer service hasn’t still sent the repair shop, and its cosmetics are ruined. I wasn’t too naive and in fact, did mention to the luthier guy that I noticed the scratches, dings, and dents. But I’m shy so I didn’t follow this up any more, and didn’t say anything to his manager.

The issues with this guitar seem to never end and it has caused me more trouble than good. I’ve only enjoyed this guitar for a few of days since I bought it, and the rest of the time, it was either waiting for repair, or causing issues that made it unplayable. The store doesn’t carry Musicman guitars anymore, and this was one of their last ones, that had a discount on it as well.

I desperately would want to either get a refund, or exchange this guitar for a brand new one. The store people have been nice to me and I have been very polite with them as well, but I’m not sure given that this guitar was purchased last September, they would get it refunded or exchanged for me. I don’t know whether the Musicman could step in and help me with this frustrating problem. I’m not sure what I can do at this stage. I’ve put all my hard earned money into this guitar that didn’t serve me with its intended purpose. I’d be grateful if you could give me some advice. Any help is appreciated. Thank you in advance.