T-Mobile's customer services used to be amazing. It's still far better than, say, Verizon's, but it has declined a bit over the last few years.
Is there a good and effective way to relate concerns about complete customer relation failures to T-Mobile? I bought a new phone a few months ago (my old one was falling apart), but when I tried to install GMail on it, it wouldn't let me connect to the internet. It's obvious if you look around online a bit why that is (the gmail app hasn't been signed with the right certificate and T-Mobile modified the stock Samsung firmware to prevent "untrusted" applications from accessing the network).
I called customer service about this because I felt like I had been lied to about the phone's capabilities. Their response - it's Google's problem. It's clearly not since T-Mobile crippled the phone. The guy wouldn't even acknowledge the fact that they shipped the phone with this restrictive firmware, let alone admit that there was a problem with not informing customers about this restriction.
My faith in T-Mobile's customer service is a bit shaken now. I've been a customer for 5 years, so you'd expect not to be treated like an idiot.
-Felix