Standard Back and missing funds

Irecieved a ***** notification on the 27th and followed the process to call back standard bank ***** department which I did,and I was elated to find out that the transactions were declined however advised to then block the card ,which I agreed too,a new card was ordered.as soon as the the card was blocked all the card information on my app was then removed.today when logging into me my app I then see that a new card is ordered however the balance on my credit card had decreased with R2500 with note that R2500 was paid into the account on Friday...I cannot get any clear answers as too what happened to the funds ,I have spoken to Tebogo and Issac who hang the phone in my ear when questions are asked ..

I have been with standard bank for over ten years and when funds just disappear and when questions are asked you get no answer,it honestly makes me wonder for how long has this been happening to me I just noticed it as it was on a somewhat larger scale and I was just alert,how safe is our money really..