I was with NECC Telecom for long distance and international calls cuz they have a good connection and low rates and I make calls to Africa almost every day. Everything was fain for a couple of years, but one day I received a bill from Primo Telecom and the balance was 3 times higher than the usual balance from NECC. I have called Primo's customer service several times to see what's all about and no chance to reach them. Than I called my LD provider NECC to see what's happening. "It looks like you are not our customer anymore, you are with Primo Telecom", said a CS Rep. "What?" I said. "I never heard about this company since today." "Seems like they are stealing our customers and in your case it was possible because you didn't have a slamming protection. We can take you back but we have to make another voice recording and you must say: Yes, to slamming protection now and no company can take you without our permission."
So, guys, if you sign with a LD provider, sign for the slamming protection also.