Unauthorized debit to my FNB Premier Banking Account

Dears

I am drained right now! I made a weekend booking with an establishment, +500 from Johannesburg. Due to personal reasons l decided to cancel the booking within 30 minutes of having made the payment using my Cheque Card. I contacted the establishment and explained my situation and they blatantly refused to refund my money! I contacted FNB and was asked to complete a Dispute Form; which l did. Then enters FNB vs. the establishment. I was eventually put into a corner and told to choose another travel date or risk losing 100% of the amount l had paid. I chose that with a very heavy heart; however in the background FNB proceeded to process the refund - PERFECT!

I got my money back and happy FNB...true the "How can l help you?" question. Then yesterday FNB sends me the emails l exchanged with the establishment notifying me that they are going to debit my account with the booking amount since l had confirmed a new date. I protested via email and told them l wasn't interested in going to that place and told them not to debit my account!

My account has now been debited against my will!

How difficult is it to understand what happened there?

I am demanding the reversal of that transaction as l did not authorize it on my account!

What kind of service is this now?

REVERSE THAT AMOUNT TO MY ACCOUNT!!!!!!!!!!!!!!!!!!!!!!!!!!