FNB Connect

I have a Connect contract with FNB, whereby FNB provides the network for cell phones. Since I started I have had nothing but problems! When you complain you have to deal with an *********** call centre agent. It has now been 5 days since my complaint has been lodged by the bank manager of FNB in Centurion himself, and STILL nothing has been done! For some reason I cannot send an MMS or receive an OTP from any company. That means I cannot get into my banking app., nor into Booking.com to conduct my business nor speak to Discovery about my medical aid! FNB is the worst bank to deal with in South Africa!