Failed to Honor the Promises as Per Tel Conversation

On Friday 18/10/2019 i received a call from *** informing me of Credit Card Limit increase offer, they did calculations with figures i gave them as per payslips and i was informed after the call that the limit was approved up to 36000(36K) and that someone will call me within 2 days to finalise this. On Tuesday 22/10/2019 i received a call from a lady by the name of Karabo Mahlangu *** she asked me to send the Payslips or 3 months bank statement. Which i did send to *** and i also sent to https://dch.mobi/35207d. which later on i received an SMS saying sent docs to *** which i did. 15 minutes later i received an SMS saying limit increase decline. What irritates me is that i did not call them they did. What happened because i was initially approved by the system considering the ITC and and. They created an impression in me that they will give me a limit increase which was approved by the system for them to decline later on. They are very unprofessional and they like to play with peoples emotions. i want that Increase to effected on my credit card as promised to 36K they are able to override. Or they have just confirmed my exit from the Bank as i already closed the Debit Cheque Account i had with them because of these inconsistencies.

Regards Unhappy Client