BP de*****s customers!!

On Friday 12/02 I went to the garage for petrol and the attendant (Givemore) asked that I pay first if i'll be using a debit card. I got out of my car complaining as there was no signs confirming that on the pumps. Little did I know that it was going to be the worst experience ever. Firstly I had to go to the garage window as he cannot bring the machine due to their network then after waiting for 10mins the machine just switched off. I took my card and went away but as I got into my car, my phone beeped confirming the transaction was successful. I called the attendant and showed him the sms of which he requested we go inside to speak to the supervisor on duty (Zizi). THEN TROUBLE started! Givemore told Zizi the scenario and he blankly looked at him and asked what must he do in such scenario. I intervened and asked Zizi to explain to me what will happen of which he told me to shut up as he was speaking to Givemore not me!! He printed a slip then said transaction will be reversed. I requested the managers details and his name as this was the 2nd time this happened to me there and I'm now upset but he totally refused. ALL I WANT IS MY REFUND!! I will never use their station ever again