DiscountsJungle Sold Defective Audio Product Internet

I purchased a Pioneer double din stereo from this company and it ended up not working.  When I tried to exchange/return it I was told that it had not only been past their 30 day policy, but since I had installed it they wouldn't return it.  How can you know if something works if you don't have it professionally installed in the first place? I had to contact the manufaturer.  So I did just that.  I called Pioneer only to find out that DIscount Jungle is NOT and authorized dealer and therefore did NOT have a manufaters warranty on the unit.  WHAT!?  I am out the cost of my unit and the installation!!  According to the steroe shop that did my install (who IS an authorized Pioneer dealer) this unit lookeed to be a refurbished unit.  BEWARE of DiscountsJungle!!  I have filed a complaint with Amazon so this hopefully won't happen to someone else.  UGHHH sppp frustrated!!!  I wish I had researched these frauds BEFORE I hit purchase!!