Can you switch from one PRE-EXISTING iTunes account to another?

To elaborate, I have had an iPod for a while now, and my iTunes account has been-and still is- shared with my family. Now for the actual problem. I got an iPhone, and when I was about to link it to our iTunes, my dad told me he has been having problems with our current account and that he wanted me to wait until the problem is fixed to link my phone. So my question is, if I were to make a new apple ID, one without a credit card associated, (I have iTunes cards) can I later remove that new account from my phone, and link the old one to my phone once the problem is fixed? I just really want to get some apps of music, as I have had this phone for months now. I really want to be back on the old account eventually as it will save me hundreds of dollars worth of apps and music I had on my old iPod. Also, don't say anything about how I should have a droid.

tl;dr can I switch the account on an iPhone to a pre-existing one?

Yes you can integrate them. Apple support hotline would be the best bet

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