Verizon Wireless Cellular Company Failed to uphold 30 Day return, No Military discount applied, poor customer service and Poor coverage Dallas TX, Atlanta GA, Texas

I was sent on a last minute military mission and needed a phone. I went to Target and picked up a Verizon phone, I asked about the military discount and the Target Employee stated I needed to call Verizon to do that. I called Verizon to enable my Military discount but I was informed I needed to go to a Verizon Dealer to enable the discount. I had no transportation where I was and the closest Verizon dealer was 35 miles away. While on my mission, my Verizon phone was not able to connect to a signal hardly ever. After returning home, I attempted to return the phone to Target but was told to go to a Verizon dealer. I went to a Verizon dealer but was informed since I purchased this at Target I needed to mail it back to Verizon. I called and complained to Verizon multiple times and they finally sent me a return mailer. I canceled on the 29th day and sent back the phone in the mailer to Verizon. I now keep receiving bills for the phone I returned and for the minutes they overcharged me for calls I could not even make! I have disputed the charges several times with Verizon and they stated it was all in my Contract. When I signed up at Target I never received a contract just the monthly charges agreement which was $69.99 plus the taxes and fees. I am now getting collection notices and neither Verizon nor the collection agency will work with me on this issue.