Here in Mexico Customer support is bullshit. But at least Microsoft changes the consoles for free and in relatively short time.
I don't know how is Nintendo customer support, it was good when I was a kid. I remember there were "Mario's Workshop" everywhere. They repaired the consoles if they were on guarantee.

Sony's customer support sucks balls. They don't answer, you gotta go to a certain small locale and they charge $300 US Dollars for repairing the PS3 (that's what they wanted to charge when my fat one stopped reading discs). I just bought a new one.

I called in to Nintendo cause I was having trouble with my Wii, and the woman I spoken to was hands down the best customer service rep I've ever spoken to.

When my old 360 rrod'd Microsoft where really good and it happened more then once but each time they where quick with the repairs and sent out free XBL gold cards. As for Sony I don't know as none of my consoles have needed repairs or replacing.

I've had to send in my 3ds thrice because of screen scratching. I put a microfiber cloth inbetween the screens and everything. Now it's scratched again. I hate it. They are super slow, and don't seem really sympathetic. I also had to send in this 3DS for dust under the screen. Over all, I've sent in my XL more than any other system. And they don't even care that they sent me a totally broken device. I'm pretty angry about it. I've had only good experiences with Sony, so there is that.

Had to send in my first 360 in to Microsoft for the E74 error and it only took a week to get it back with a free month of Xbox Live attached to the console.

Went through 3 or 4 broken PS1's my parents would just buy a new one each time it broke. Went through 2 PS2's both broke due to power surge's during storms.

Good experience with Nintendo
Bad experience with Sony over a launch PS1 that started overheating right after warranty ran out

Well a couple of years ago I had to cancel my auto renew XBL membership. So then I looked up in the internet on what to do. It turns out that they required a Sh!! ton of info to verify my identification over the phone. So I did a lot of research and I was armed to the teeth when I called Microsoft.

But here's the twist. I had all the information with me when I called them. However they only needed a couple of information to verify me not the crap ton they were supposed to ask me (according to the Internet). Except for the fact that they tried to convince me not to cancel it. It was fast, short and simple. Hassle free.

BTW I cancelled my XBL membership back in 2010 b/c I was sick and tired of paying for XBL and MS even had the nerve to increase the price. So then I swapped to playstation 3 for a year. It was good but not great, PSN didn't really live up to the hype fans were saying about it in the internet. SO I ended up paying for live... again.

Bottom line: Excellent costumer service MS. Cant comment on other companies.

I think after RROD, MS pretty much forced themselves to be the best at customer service lol

nintendo and sony are very good at customer server

Technically...no, that isn't customer service.  Customer service is when the customer requests service and your ability to meet their needs.  Similarly, customer support is when the customer requests support and your ability to meet their needs.

Engineering and build quality do not qualify as customer service.  Not even indirectly.  The need of a product does not qualify as a service or support need, because you first have to have the product in order to require customer service or support.  In other words, service and support are after sale non-tangibles.