Poor customer service and no tickets!

I wish I didnt have to resort to this but I am out of options now. I booked tickets with Travelstart before Covid and app**** for the suspension of the flights. Then I tried to rebook the flights before they expired but there were no flights with the airline Latam to rebook. So I asked for help and an employee by the name of Melissa Eksteen was very helpful and got the airline to keep the tickets open. But now that I am trying to book the flights I am told the tickets are expired. I just want Melissa to give me a call again and assist me but it is impossible to get a human to call you from Travelstart, despite several mails telling me someone will call me. The below is what I got told last year: Thank you for taking my call. As discussed I will be emailing the airline to have them open the tickets and keep them opened so that the ticket is not lost and this will then permit you to rebook until next year as per Benjamin the Manager at Border Air in charge of LATAM bookings in South Africa. I will let you know once the bookings have been opened. ~Melissa. I wish there was better service because I paid a lot of money for these ticket but the customer service is so poor. I will not use Travelstart again.