Dark Souls 2 Soft Ban

I think i got soft banned on dark souls 2, i can see all the messages,all bloodstains and i am not hollow. i can´t be summoning or summone another person. Anyone know a fix? I read that changing my Gamertag maybe remove my ban, I have been trying to play with my friends and we all have the same level, soul level and the bosses of areas, i play on xbox360 and i only modded the itens and the equips of the game I didn´t change souls or soul level. Somebody can help please ?

I don’t know anything about Dark Souls 2, but I googled it. Here’s a thread on another site which may help: http://www.gamefaqs.com/boards/693332-dark-souls-ii/69125577