FNB service is not satisfactory

I am very unhappy with FNB. I reported a ***** case on my credit card 2nd of august 2024. I got a sms of a sale at tekkie town in crests and I am staying in Cape Town. I immediately contacted FNB ***** and reported the R4000 *****. I followed up and called 11 times. 32 days later nobody answered me. I went to a branch where the branch manager spoke to a team leader at the ***** department. They said the case was declined because they logged it for R13000. I reported R4000 and told the person I bought at Takealot the Sunday the 31st and the ***** was 2 days later on my card. The sale at Takealot was for R9899. They combined the two figures. I logged another ***** case. I went to the bank again and they said it was a duplicate and declined it again. I reported it again as R4000 only. Every time they said they sent emails and up until today I haven’t receive any emails. I went to the branch again and I emailed *** to despute the outcome. 7days later not even Care sent me an answer via email. I went to the branch again and they said they will sent me an email. I wanted the email to go the ombudsman and have proof. I GOT A FEELING THAT THERE MIGHT BE OR IT IS POSSIBLE THST THERE MIGHT BE A LINK BETWEEN FNB AND TAKEALOT. I am a very good client for more than 15 years and have a good score rating. I am so unhappy with FNB and will never advised anyone to go to that bank. The ***** department not even assist me and the CARE@fnb email which is where you despute do t even answer me. I want my Money back and I will never buy online anywhere