I've had the worst experience with blue Advance

I've had the worst experience with blue Advance. I used their services by borrowing R50 electricity. When I paid it back the payment did not reflect so I paid another R50 then it reflected. I have made contact with them several times to query the first R50 that I paid. I have logged more that 3 tickets and I have been waiting for them to get back to me, till today no one has called me to fix the matter. I am not happy at all with their services.