Closing account, paying amount every time

i have been with Standard bank for 26 years, im moving to ABSA now. this is the best decision i have ever made. i called to cancel my prestige account they sent me a mail on amount i need to pay. after i paid it i called them again then they stated sorry they cannot help closing it over the phone. the amount only valid for one day now its already the 2nd and its still not closed. this is very very bad services to clients i will make sure all the people i know remove them from Standard bank, im also taking away my companies from them as well.