Bests & Worsts Reviews from Amazon

I purchased this kit in Dec 2017. I received an email in Feb stating there was not enough DNA in the sample and they would send another kit free of charge to repeat the test. I repeated the test again following all instructions as I did in the first test and sent it back to them. Another month later I get the same email stating they can't process the test and they would issue a refund. I have called several times and emailed customer service, but they keep giving me the run around about my refund. It has now been 5 mos since I ordered the kit and I have no results or money back that I paid for the kit!