phone activation issues

I've been trying to activate my iphone for 6 days. I ported the number from verizon and everything on their end wend smoothly. The iphone continues to display a message "iphone is not activated contact your carrier if this problem continues to occur.' I've called customer service 3 times for a total investment of about 3.5 hours. Then I used online chat. Each time, I get walked through the same steps that do nothing to fix the issue. The first rep sent another sim card (which arrived 3 days later than promised) and the same issue persists with the new sim card. Anyone able to help? This is an FCC violation and I'm willing to take my complaint there and to move my service to another carrier (along with my cable/internet when I go) but I'd rather get this resolved.