after sales service is horrible

The processes are really something else no sense of client centric processes, it took me 2 weeks to close my credit card, everytime i called there was a different amount and i had to wait and call again to close ,Eventually this was completed and i requested a paid up letter on the 31st of December , i was told it takes 24 hours , i understood it was New years eve and waited a few days more, i then requested this 2 more times after , i went into a branch they reffered me to the phone , then i emailed complaints last week and its more than a week now still no response, the only time i get a response is when i complain on Hello Peter , this is not the first time , and i am forced to yet again take time to complain to get a simple request done.