Lack of response and customer management

In June 2019 I missed my flight to Kenya via Kenya airways as a result of being denied boarding because the flight was overbooked and it was full. I was informed that I will receive some compensation because of the inconvenience and I was also told that I should submit my voucher which I received at ORT. When I submitted my claim (voucher) I was informed that it will take 6 to 8 weeks, and the submission was done on the 1st of July 2019. I have thus been following up with reservations and I have not been receiving any response. I hope they can attend to this matter because it's overdue.