withdrawer money from SPARK CAPITEC ATM but not all the money came out

am so frustrated with the service I received from capitec bank, on the 25th of October my girl friend sent me R2050 to withdrawer so we can pay our bills, I went to capitec ATM in mashigo tembisa and I withdrawer the R2050 but to my surprise the only money that came out was R1200. I stood there thinking that the rest of the money would come out but nothing. After that I went to capitec branch in tembisa plaza for assist and they told me that am not the first client to come to the branch to complain about such. One of the consultant then made a call to "Sparks", I was informed that "Sparks" is the company that's in charge of installing the ATMs and the problem is with them. The lady I spoke with from Sparks informed me that someone will come to the ATM to count the money then I will get my money back. Today as am writing this complain I have not received any feedback whatsoever , I don't understand why my own bank could not protect my money and when ask for assist am told to speak to sparks , I mean whose problem is that, I don't bank with sparks I bank with capitec so why should I do your job instead of you doing the follow up. I want my money so I can go and open a bank account with other bank , not this.