Master Chief Doing Re-sets

Master Chief started to reset at the start of level 3 CE. Run great till I got into level 4CE, challenge #4. Now I log in, click myself to where I left off. Go to “RESUME” and boom “I’m back at the starting window”
i hope someone can give my an answer to this problem. Does anyone even have a support phone number I can call & speak to a human voice?