Zero consideration for customers

Received call from ***** department on the 18th Sept., advising of ********** activity on my account. Advised to go the branch to change online banking, which I duly did on the 21st Sept., as no funds were removed due to insufficient funds in my account, no ***** case could be opened. During this period, my phone was broken and I did not receive any SMS notifications for transactions. On the 6th Oct, I logged onto my banking to pay accounts, and no funds were available. There were 8 ********** transactions, I went to the branch again and completed all necessary documentation. Received message on 13th Oct with reference nr, called to follow up, was advised no documents were received and were not aware of any ***** case, only a debit dispute. Went back to the branch, ordered a new card, and have been following up ever since. Now have been advised that I approved these transactions via OTP code, but this is impossible as I have received no SMS notifications in 2 months, not even of the deposit of my salary. I am now the one being inconvenienced and left without funds due to FNB's inefficiency. Please would someone actually show empathy and help me!!!