Horrible app and customer service.

FNB's customer service is horrible. I wanted to change my bank account from a premier current account to a premier fusion current accout, which is cheaper. I've been to a branch twice, phoned fnb about 10 times, used the in app chat about 20 times and each time certain promises are made which have not been fulfilled, in the apps offers it stated I could change the account to a fusion and after trying that 15 times, each time receiving an error message, I am fed up. The customer service is horrible, the app is horrible. Today I was promised to receive a call at 12:00. No call came through, 30 minutes ago it was apparently escalated to management who would allegedly call me in 15 minutes. No call. If this isn't sorted out today, I WILL BE LOOKING TO CANCEL MY ACCOUNT.