REFUND ON TKT NOT USED

i was in the process of relocating and booked my air ticket on my smart phone, as i did not have access to my laptop and modem available. i usually book via my laptop. the tkt was booked for 1 or 2 oct 2015 lanseria/DBN return. i struggled with the phone connection, but seemed as though the tkt was booked. i then got a sms from my credit card that the payment was not authorised.later i got another sms from my credit card that amount was authorised. however i did not get any email confirmation that day re the tkt been booked. this caused some confusion. i then phoned kulula and enquired if the tkt had been booked. they had no record of the tkt been booked. which i accepted. kulula must trace my cellphone call and check their records. my credit card has now deducted this amount. i then contacted kulula to sort. which they took time as person went on holiday. i just received an email that kulula did send me an email, of which i did not receive and that it was a no show for the flight. this is nonsense i am am not accepting this..... i did query the same day with kulula and they mentioned that they had no booking on my behalf. please advise.