Unauthorized debit

I'm so so so stressed and disappointed with Capitec right now. I had an unauthorized paypal debit that went off my account on friday evening/saturday morning. Firstly, I never received any notification for this debit. According to the call centre operator I spoke to earlier this morning (whom didnt seem to friendly) - It was an online shopping purchase to the value of almost R1600.00. It went off through Paypal - whom I have NEVER used and dont understand or know how it works. I'm really stressed because now my other financial obligations and overdue and I have no cer*****y if I would even get that money back. I am seriously looking to change banks because I have not heard any good reviews of late as Capitec has lost it client centre values. This matter has really put me in a very difficult position financially. I'm so so stressed and scared right now.