Bad Horrible sarcastic client care

For the first time in my life i paid 150 rand short on my blue bean credit card. I always pay more than needed and always on time. So this morning i got a phone call from Standard Bank call centre telling me I short paid my account with 150 rand. I told the lady on the phone im so sorry..but i never ever receive a statement from them. So told me to check my junkmail wich i did and still no statement. I felt so imbaress and told her i will pay another R1000 today. Even though i only short paid R150. Sarcastically she asked me ar what time.. i said by the end of the day..she rep**** she wants to know what time.. i mean really.. i then also told her i will pay another R1000 end of the month.. she immediately wanted to know wich date. Standard bank i have never gelt so imbarress in my life. I have never ever paid you guys short and she even rectified that on the phone call. Why treat me like a poor customer. Why treat me like somebody who pays short. I thought R1500 should cover my credit card payment..yes i paid short with R150 because you guys never post statements anymore. Im done with you. I will clean that account asap and cut that card. I will not tolerate a Bank to treat me like a ********. Ive been a loyal customer of your bank for more than 20 years. Never ever arrears . One short payment and your call centre person treats me like ****. A phone call just informing me of short payment and when i will be possible to pay it would of been a much better approach. But clearly you dont know how to treat your customers. I am shocked. I am deeply shocked. Never in my life have any call centre agent ever treated me like this. No more support standard bank. No more.