WESBANK Credit Card Department Pathetic Service on Lost Money

Today I made 10 phone calls to WESBANK Credit Card division regarding and international swift payment I did from Kenya into my WESBANK credit card on 27 September 2019. The money was debited from my Kenyan account on the same day, but as of today still not reflecting in my WESBANK account. On calling and being transferred from one to the other and having to redial a number of times I was told they do not see any transactions so all is fine, however my money is still missing. I asked for an investigation on where my money is and we told it will be escalated and addressed in 5 - 7 working days, however I am still paying interest on the amount outstanding as the amount I transferred was to clear all outstanding monies on my account. I also send a mail with a "read receipt" and noticed the mail has been read, but still no response. What do I need to do to get my money back????? Nobody seems willing or able to help???? Am I expected to just let the money go?????