Travelstart - Left out my surname - Cost me my flight.

I booked a ticket via Travelstart for a direct flight Cape Town to PE. E-ticket was confirm with passenger name "Mr Llewellyn DeKock Llewellyndksolvemcoza". These names are my firstname, surname and email address without the "@". None of these are unfami**** to me. For extra risk mitigation I engaged and paid for their service to check me in. the checked in ticket had the passenger name as "LLEWELLYNDKSOLVEMCOZA/LLEWELLYN MR" all these are completely fami**** to me and no red flags raised in my mind. However at check in BA check in clerks refused to accept the ticket even though the seat was available. I presented evidence that my return ticket for later that day issued by same company was correct. Also showed them evidence that the email address was mine and the evidence of the emailed ticket. I was not allowed on the flight on account of an minor error from Travelstart and now I am refused a refund. In fact I had to buy a new tick to fly out 3 hours later else I would have lost my return flight as well.

It is frustrating that Travelstart is not willing to talk to me. They are only sending me no reply email response.

I have a registered login account with Travelstart. I have travelled with them many times. How could they not cross check and issue the ticket correctly.