May I upgrade only my internet service without making changes to any of the other services I have? I just received the new XFi6 router/modem (which I did not ask for) and installed it. My download speeds are about 92 mbps. I had a lower-end plan o to take advantage of higher speeds, I assume I would have to upgrade my internet speed to a higher level ... which I'm sure is part of their plan. In any case, I'm happy with the other services I have (TV, phone) and don't want to change that, but simply want to upgrade my internet speeds. Can I do this without impacting my other services? Thanks.