No answer holding for 50minute

i am so disappointed and ****ed i held on the line for 50 minute holding to speak to an Agent. 1st used this number which shows on my statement ***) to get settlement on my account this number tells you they not available try again later i have been doing just that from the 25th May 2015 to no avail. I then dialed this number 021 764 3152 but still no 1 answer. This is to much. someone please assist i want to close this account.