Parts Geeks review: Brake booster core

I ordered a brake booster for my suburban. I done everything they said and mail back the core so they could give me my $32 for the core. I mailed it back first they try to act like they didn't receive it till like explain to a guy the coloring and how I done the box so it would stick out then they tell me they found it and they're going to pay me in 2 to 4 days well it's been over 10 days so I send them an email and they tell me that they still trying to process sound like a bunch of BS don't spend your money with them