Pathetic Service and *********** Staff

I called customer services at 8am on 2212 to change ticket dates for 2 travellers meant to travel 22/12 at 10am from Pretoria to Durban. I was informed that tickets are not transferrable and we can't get a refund but I can change the travel dates by sending email in 7 days requesting such. I sent email on 26/12 with copies of tickets and ref. numbers asking for travel date of 28 June 2015 from Pretoria to Pinetown. I called customer services 2 days later to ask them to respond to e-mail or let me know what I should do next. Nobody was able to assist and I was put on hold for 45 minutes. I've been trying from 28/12/2014 to date to get help from the call centre and nobody is ever able to help me - everybody just gives me a run around, are rude and tell me they will respond to my email!! I spent R518 on the tickets, made sure I request date change but now I want to use the tickets - call centre expects me to remember who I spoke to 6 months ago for the initial call!! I have spent hundreds of rands in airtime following up and doing my part now they tell me THEY CANT DO DATE CHANGE!! INTERCITY EXPRESS ARE THE WORST BUS SERVICE EVER AND THEY ARE DAYLIGHT ******S! PUTRID SERVICE!