Angry customer

I had a case pending of an error transaction done on the 12tg of December an amount of R4500 to a Capitec account you people charged me R170 to have my money reversed however you keot quite toll I decided today to contact you on. Watsapp only to tell me the reversal was unsuccessful and there's nothing you can do. I still can't believe you people. What service are you giving to your customers I've have other bank account with different banks I must say your bank is ******* you actually can learn a lot from them. so much money I had lost and only for you to say sorry just like that you didn't even have a decency to let me know as I was advised I'll be contacted.