Waiting for feedback on copy of my contract

I need to take my Phone to Samsung to get repaired as the screen is cracked, I however require proof of purchase otherwise they cannot assist, its on a contract and is still active, I went to the Vodacom at the mall of the south and was advised that I cannot get proof of purchase or a copy of my contract there, that I would have to go to the store I purchased my phone, I called Chatz Horizon where I purchased it and they could not assist me because they no longer have my contract on record as its too old? Not sure how, they picked up my details when I gave them my mobile number, I was then told to call Vodacom, I spoke to a consultant that logged my query and advised I would be contacted, I received an SMS to send through a copy of my ID and they would contact me back, still nothing,, I called them again yesterday and was advised that I would have to resend my documents to get this sorted, of which I did, it has now been 3 weeks and STILL NOTHING! All I want is proof of purchase or a copy of my contract to get my phone in for repairs<br> My fianc? walked in and out of MTN got a copy of proof of purchase for his phone and it was fixed within 3 days! <br> I want to change subscribers again