FnB Bad Service and broken trust after 28 years

On 25.11.2022 Travelstart took a payment of R514.76 for a booking I made for a return flight from OR Thambo to Windhoek through them. On 26.11.2022 Travelstart passed a payment to the same amount to my debit card. I completed the required forms and documents to both Travelstart and FNB. To date this double payment has not been reversed back to my account. On 13.01.2023 I swipped my debit card at Engen Garage Wierdapark. On 18.01.2023 I realized when checking my bank account history that the amount of R196.48 at the garage was deducted twice from my debit card on the same date. I contacted FNB and completed the Cheque & Debit Card Despute Form again. Still no reversal of this amount. On 25.01.2023 I decided to report both transactions as ********** through my account, as last desperate attempt to get FNB to reverse both incorrectly passed debits to my account. The outcome of this desperate attempt...FNB canceled my Debit Card. This is the disappointing support and bad service that I have to receive as a Loyal customer of FNB for nearly 28 years?