I JUST WANT MY PROOF OF PURCHASE

I have contacted Telkom mobile on numerous occasions asking for my proof of purchase for my huawei p8 light, after speaking to an agent in billing they transferred me to an agent in sales who transferred me back to billing having gone back and forth I was told that it would be emailed to me but it hasn't failing that I called again they logged a complaint after a few days I got a message from them saying the case has been resolved and I should visit a store, get to the store and they can't assist me, I called again the agent pull me on hold for an entire hour I had no choice but to hang up, most of your agents aren't even trained properly and lack product knowledge it's now less than a month that my warranty will expire and still after calling more than 10 freaking times I don't know what more to do, only thing I can do now is put a stop order on the debit from Telkom and you guys will get jack **** from me