I have removed myself multiple times from their mailing list. I have even put them into spam. And yet their emails persist. Just stop.
Tip for consumers: They offer you questionable, at best books of their choice, you don't get a say. And then they never stop begging for your attention in emails no matter how often you block them.
I ordered a violin for my husband(GV100 4/4) as a surprise. When it got to me the box was thin and banged up but the case had kept it safe. When I opened it the violin and case had glue on it, the rest was dirty, and the bow had a crack in it.