Can you claim your warranty? It's only six months, should be covered.

For the Switch dock, pretty sure you need a usb-c charger with PD (power delivery).
Enjoy this read: https://plus.google.com/102612254593917101378/posts/2CUPZ5yVTRT

I've used my Switch many times with a QC charger and an unofficial portable dock and it works perfectly.

It's electronics, it happens. If not to you then somebody else. Doesn't have to do anything with Nintendo either, considering the cables are all produced in the same Chinese factory anyway.

I'd be careful going with third party chargers, especially if you want to use it for docked play. Nintendo does not use the official USB-c power delivery protocoll, but their own proprietary one, meaning that a third party charger that is certified for the official USB-c power delivery protocoll and your Switch might not be able to properly talk to each other, wich causes errors and might result in it frying your system.

It's probably fine for handheld play, since the amount of power delivered is just not big enough to fry the system, when undocked, but for docked I'd always go with the official NIntendo or Nintendo-certified chargers.
I've used an Anker cable for about six months with my Switch in handheld mode and had no Problem, but switched to a second official charger even for tablet (non-docked) charging just to be safe.

I read about this before which is why I am a bit worried. Another poster suggested the factory warranty . I will try that this week. I did get the Walmart one because I wanted to solve the issue rapidly.

I want to update on this situation. I bought a generic power cord at Walmart and it worked with docked for some time....then dock itself stopped working with the generic power supply. I feared the generic cord had somehow damaged my docking station. After nearly a year I mistakenly pulled out the "damaged " official Nintendo power supply to charge my switch in preparation for Dorian a few days ago (I live in Puerto Rico.) I was shocked a few hours later when I went to check up on the switch and it was fully charged with the official power supply....so I decided to try the Docking station with it and after a few tries (The docking station wouldn't do anything ...it finally worked again and I was able to see the image on the big screen). I seems that my old house had electrical problems and Nintendo's power supply wouldn't work in the out lets. Moving to a new house seems to have solved the issue. 

Chalk one up to shitty house wiring. Case closed

This always makes customer service troubleshooting a nightmare.  People often have issues in their own homes that they just weren't aware of.  Electrical outlets, especially older ones, often have very weak grab points for the prongs from a plug.  I've even had to tape a few of my surge protectors into the wall to make sure they don't fall out.  I know, I know, I probably could have replaced the outlet for the same amount of trouble.  I don't always make the best decisions.  

OP: "My Switch won't charge."

Nintendo Customer Service: "Have you tried moving into a new house?'

OP: "Hold on one second." *moves* "Okay. That seems to have solved the problem."

Nintendo: "Great. Now if you'll stay on the line, there's a brief survey that---"

OP: *hangs up*

It was real strange scenario, because my PS4 ran fine. My switch would charge with a 3rd party cable. But the dock would flash its light and not work. I guess the Switch Dock and power cable are a bit more sensitive to this type of stuff. It was weird. Where I lived before the new house I did have other electronic equipments fried by electrical surges ...so I am glad I moved out lol 

Oh, that's rough. Better contact Nintendo CS. Mine is chugging along fine after almost three years (launch unit). I actually put in like 70%-30% in favor of docked play too.