Other Fuel System Hoses Lines/piping, And Fittings problems of the 2014 Hyundai Santa Fe

I purchased this vehicle the end of June 2014, which I think I got a lemon. My gas release cap would not open and was told that a part needed to be order. I took my car in to south boulevard Hyundai yesterday morning, so they (service tech) can open the gas cap so I could put gas in my car. I don't think parts should be breaking like that in the short time that I had the car, so the cap was open and the service tech left the broken piece inside the cap, he then told me that the part will be in next Tuesday, iwhich he did not sound convincing. When I first got the car, there was a tear in the visor and it tokkm a couple of weeks to get that replace aafter I pushed them to do it, I was also informed the cabin air filter need to be replaced. I don't think I should be replacing anything other than reg oil filters. Now I hear a slight whisper in the car, then the car almost cut off on me. I can see if I am abusing the vehicle but I am not, all I do is drive to a from work and to the grocery store, now since the gas cap will not close I am afraid to go anywhere think someone may put something in the gas tank or break the cap door off, I don't like driving see my gas cap door is open. I also have a trunk release feature on my key chain but don't have the feature on the car, I called hyunday USA and was told that I should have that feature, and when I contact Hyundai on south boulevard in charlotte, nc I was told I cannot get that feature. , very disappointing about paying for a $25,000. 00 car, as and cannot get the help that I need, as far as the cabin air filter, the tech stated that I would be smelling something fowl, and I do, and is making my head hurts everytime I get in the car, I just hope I don't get cancel from it.

At 8,000 miles the check engine light came on. Took it into the dealer and they said the gas canister overflow was full causing the check engine light to come on. They replaced the gas canister and filter under warranty. At 14,000 the check engine light came on - took it to the dealer - they said I had overflowed the gas on fillup, and I had to pay $800-900 to get it fixed. I never top off the tank. It sounds like a defect to me, and I cannot afford $900 every 10 tankfuls or so. Hyundai customer service is looking into it asked them to fix the defect - or take the car back - waiting to hear.