Poor service

On Wednesday I was at home when I received 6 sms's of 6 ********** transaction to the value if R9000 from my account. I immediately esculated the issue and I was informed that I would be invesigated by the ***** department. The ********** transactions still showed authorization outstanding on my banking app. So I was unddr the impression that standard bank would freeze those transactions. Yesterday after 2 days I discovered that they allowed it to be authorized. Thr 2nd issue. I need to take care of my daily needs. I am employed and I need yhe funds to travel to work anf back and to take care of myself. I have given them the 72 hours and still I haven't received any feedback. I called the standard bank ***** line yesterday and the consultant wasn't very accommodating. He couldn't assist me at all. Standard bank is suppose to protect my money and I only do online shopping at reputable companies and on my phone. No one has access to my phone. And how could someone complete a transaction without the one time pin. Please resolve this issue asap. The reference number is ***.