Bad service from mtn and nedbank

I bought shares with mtn futhi in 2016 I recently called them to check what's happening they requested an ID number to check on their system, then I was told that they can found a profile using my ID number so it means they didn't locate shares to me. I was told I need a proof that I deposited into their account so they told me to go to need bank. Nedbank refused to assist with printing a copy of a deposit slip. Called mtn and told them that nedbank is refusing to assist so what is the way forward as I need my money if they won't allocate shares. Now they not responding to my email