ABSA dispuut department takes 10 days to respond

I booked a ticket to the UK through a travel agent. Within 30 minutes I notice a mistake with the dates, so I send immediately a reques to cancel the ticket to the travel agents. the next day I notice the payment has con through. I phoned the mastercard department and asked them to reverse the payment, they referred me to the [Email Removed] email addres. Only 10 days later I got a lame responce to contact the airline directly. Everyone delayed, even the travel agents and no ticket refund can be made anymore. So I am forced to use th wrong dates or pay about double. what a mess and I though we life in a modern world where a transaction can be cancelled within 7 days if not satisfied, now not even 30 minutes and you are bound to pay up, SORRY SIR.