Other Fuel System Hoses Lines/piping, And Fittings problems of the 2011 Jeep Grand Cherokee

Safety issue- fire/explosion: gasoline fumes outside of Jeep at 63k miles. Dealer completed smoke test and reported smoke emitted from top of gas tank indicates leak from one of several access ports (filler pipe access, fuel pump access). Dealer cannot confirm without $1,600 fee to drop tank to confirm diagnosis. Dealer felt leak due to faulty design/manufacture/assembly/installation of parts (o-rings/seals/etc. ). I am original owner, retired,on fixed income and have completed all recalls and meticulously maintained vehicle. Dealer suggested I call Jeep corporate (800-992-1997) and ask for "goodwill" repair. After 17 phone calls to Jeep corporate I continue to get: 1) no reply, 2) no callbacks 3) catch 22 stating I must pay for tank removal to confirm diagnosis, repair and determine if parts are defective. Jeep corporate (kenisha -operator kb805) told me today (2-20-18) that decisions was made not to grant goodwill repair due to dealer report that leak probably (not confirmed) due to corrosion around access ports on top of gasoline and warranty has expired. Leaks due to corrosion by "wear and tear" and not faulty design/ manufacture/assembly or installation at factory. I was told I was responsible for full cost of repair, irrespective of potential fires or explosions due to gasoline fumes emitting from corrosion on top of plastic gas talk. I disagree. The design (inaccessibility to top of gas tank0), parts (non-corrosive stainless steel metal retainers, and o-rings), and questionable assembly have resulted in this potential fire and explosion trap. With safety being in the name of NHTSA, I am hopeful investigation and recall address this issue. Thank you.