WORST SERVICE EVER

I was offered a 3 month extension of the covid relief extension on my banking app, due to glitches with the app which i battled with since the 14th August and have proof of it all and being ill for 4 months now with a brain problem, i have been sending emails and chatting on the secure chat. Have received many emails advising that everything was escalated and someone would be in touch with me with 2 to 5 days, finally someone called me due to me not getting any replies whatsoever on my emails to them to say that a manager from the Premier Banking would be making contact with me, to date no one has bothered calling me. Due to the lack of response etc, they now want to repossess my vehicle due to FNB's empty promises even after i kept getting automated calls saying that i could extend my relief, i have never had any problems with the bank and my account was in good standing up until they could not be bothered looking into my emails and requests for someone to call me, IF THEY EVEN BOTHER TO GO BACK AND CHECK ON MY SECURE CHAT THEY WILL FIND ALL THE CORRESPONDANCE THERE!!!