Then I started receiving emails from customers saying they couldn't not reach us. I was able to replicate the problem with my cell phone. Depending on the carrier of the caller, the call would either route to my old provider or to RC. So, I reconnected my old providers ATA and sure enough, i would receive phone calls on both devices (RC and the old provider).
I spoke with RC tech support and they said from their side the port was successful, and that I needed to contact my old provider and have them remove the number 100% from their database. I have contacted them, and they removed the number. Now, certain callers just receive a busy signal and I am caught in the middle between RC and the old provider. They each keep pointing the finger at each other.