apple id/ icloud

PLLEASE HELP PHONE WILL NOT SIGN INTO MY APPLE ID/ICLOUD AND ALL MY APPRENTICESHIP DOCUMENTENTS ARE ON IT IF I CAN NOT GET THEM I HAVE TO DO ANOTHER FOUR YEAR TAFE CORSE TO GET THE SAME CERTIFICATE STATING IM A FULL QUALIFIED PAINTER PLLLLLLEEEEAASSSSEEEEE HEELPPP im about to break down in tears i dont know what to do i bought iphone 6 IMEI ********* MEID ******** ICCID ********* GOLD and will not let me sign in to my apple id because there is another persons there what do i do i rely on my phone for work plllease can you help me please i am begging you?????

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