Disappointed client

I am a new customer, I am unable to use internet banking. I have tried to register on the App and nothing has worked, today I was advised to go to the branch which I did and then the advisor there said he reset my profile and I was sent an sms with an OTP. This has not worked, he said i should try it later which i did and im getting the same error. I have called, texted the business no one has been able to assist. I can either withdraw or swipe, no online transactions which is an inconvenience. I am so tired of trying to get helped, I emailed their complaints department but no help as yet.