Refund

I bought tickets on computicket and at the end of the transaction I just got random sits that are far from each other. I don't understand why we can't choose sits while booking.

I then called to try and get sits next to each other. I was told the seats can't be changed. I have to cancel that ticket. I then cancelled and asked for a refund. Now I am told to provide my Card Number and the CVV number. Why do I have to provide such sensitive information? This just is very ***** and questionable. Why can't the money be refunded to the card cause you guys have the details of the card that was used for the transaction.

When I asked to rebook using the same tickets I had cancelled I was told they have to deduct the money for the new booking from my bank card and refund me the money from the old tickets. This is stupid and doesn't make sense. What is the purpose of rebooking if I can't use the ticket refference that is already available to rebook? Can I please just get my money back because I'm exhausted already from these stupid stories