Luno releases personal and private info to ******

I had R13,000 ****** from my account at Luno last Saturday evening, in a matter of a few minutes. Luno clearly released my cell number AND that i was a Luno customer to ******, because they sent me an sms and within a few minutes of me clicking on that sms, which stated it was from Luno, my cash was ****** from my account. Luno allowed another cell phone to register on my account and that was that. Luno customer service has been totally useless at answering my concerns that they released my cell no and that i was a customer. I've had no feedback in over 4 days since reporting this. I have been in financial services for 45 years in both the US and SA and have never before had funds ****** from my account like this. My cell number and knowledge that i'm a client is not released to ****** like Luno clearly does. I think Luno is responsible for refunding me BECAUSE of releasing my details to the market like this. They are clearly not responding to this