Refund as no proof of contract

i requested my contract from Vodacom since June 2015. I have received my upgrade contract for a blackberry which was done in 2011. In 2013 i did another upgrade to a Samsung Galaxy 4 of which i am requesting the contract on. i have received the wrong contract 3 times. Spoken to Brenton on the 24th July who promised to resolve this issue and call me with feedback. to date no feedback. If my contract cannot be provided please can you refund all my money on this contract as you dont have proof of me taking out this contract. Cell number ***. call me on ***.