I have received 3 pops that did not authorise so far

I have received two proofs of payments that l did not authorize. I have tried calling and l was on hold for 7mins until it dropped, I emailed to the only email address that l could find only to be told its nolonger in use go to the FNB app, Chatted to the fnb app robot only to be told you are number 98, your notifications must be on for you to know when a banker is available. should it be this difficult to get assistance FNB?