FNB no way to contact whem money goes missing from your account

Last resort as i cannot get hold of FNB. I can't log a dispute on the app, neither can i use secure chat on my banking app. The phone lines just keep ringing and the call me back form i completed, no one got back to me. I dont have a branch near me and this is rather urgent.

Last night my account was in a - R16 for 2 attempted card transactions which failed. Within the last 24 hours i have received 2x payments to the value of R338 but yet this morning my account shows a balance of - R544. Neither of my payments reflecting... There is also no card transactions on my account which is unaccounted for and nothing for thag value. So where is my payments and where is my funds????? i keep all my funda in a seperate account and only tramsfer out as needed. I have transfered out for every singke swipe i have made, so FNB should not try and tell me its for previous swipes that havent gone off yet because i refuse to accept that as i can prove on my statement where i transfered out money for every swipe.

I look forward to hearing from FNB tomorrow.