Shockingly poor Customer Service - Call Centre (JHB)

I wish to lay a formal complaint against Moyingi from the Call Centre/Office in JHB whom I spoke with yesterday at the number ***. My daughter, who is Deaf, will be travelling from Melbourne to CT return and there is a 24 hour layover in DOHA. She said she would be given a voucher for a hotel accommodation and the consultant said she would speak with her Manager and call me back yesterday re the Voucher. I also asked her to email the voucher to me. I have not heard back from her! Shockingly poor Customer Service.