Airtalk Wireless review: Refund/trade program

I ordered and paid in full $59 for an iPhone7 and was then also prompted to purchase a sim card for $10, I also paid the extra $ amount to get a faster delivery for my phone. I then receive my package and turn the phone on and begin to use the service, which phone was nice and screen quality was better on this phone then I had with Moto or Samsung in the past, however the major issue with this cell phone was I could not download apps that I had to have for my day to day life needs, which I did not realize this was going to happen, I guess this year of phone was old and not able for certain updates, I did not know this at he time. I then intialized a chat to get either a refund started or was trying to be helpful and make life easier and just trade my phone in for another device, which the support agent provided me with the trade in program, I was happy and said ok, sent my phone back in, and then still have not received my voucher, not only this, they are trying to only give me 30.00 dollars in total for this phone for trade and I am completely in shock, cause for one it came from this company and I even showed a receipt for it. This is not correct. I would like to get my money back in full and of course not for the sim card I still have but for the iPhone and cancel any services with this company, they never answer phone calls and or reply to messages. My name is Leah Hodges, and my date of birth is May 08, 1990. If any documents are needed please email me at [protected]@post.com