Will not fit and customer service from american defense is horrible - American Defense Manufacturing Holosun AEMS QD Red Dot Mount

Look and finish is very nice but quality is the issue. The holes did not align on the mount so I reached out to American Defense. The only response I got from their sales and marketing was that Holosun made about 500 AEMS that had the wrong hole pattern and I needed to reach out to Holosun to get a replacement. I have quite a few AEMS so I tried other ones before hitting up Holosun. I made sure that serial numbers were at least 2000 greater than the first AEMS I tried. None of them would work. To add I also purchased a Reptilia and a Unity mount...both of those work perfectly. So I respond back to American with this information. It's been over a week and still no response but from the the tone of the first email I really didn't expect a response...came across high and mighty like how dare I question their product. One things for sure I'll never buy anything from this company again.