We bought a Hohner Golden Melody harmonica for training, and spent 20-30 minutes a week simply extracting soft sounds (we live in an apartment, you can't make much noise). She came, by the way, with a small scratch, but that's okay, Galya is not spoiled :)
After about a month, the accordion began to produce wheezing, grunting sounds from several holes (which go from 5 to 10).
We contacted support to get advice and service on the purchased accordion, at least just so that the expert from whom we took the instrument looked at it and said his opinion.
The guys from 4club didn't even want to watch. Remotely via the Internet, they gave a verdict that the accordion was broken due to inability to use it :)
I had to dig around and look for a third-party service that repairs harmonicas, let's see what they say there.
A fat minus from me for the lack of even the slightest desire to deal with the problem that the buyer has :)