No Response From SAA Regarding Approved Reimbur*****t

I had booked flights with SAA and paid for specific seats for my wife and I. The flights were subsequently cancelled and we were put on different long duration flights where we were not seated together. I raised this with SAA and was told by a member of their Customer Service Recovery Team, Annelize Jacobs that they would process a reimbur*****t. I provided my banking details as requested and since then I have not heard back from anyone at SAA including Annelize Jacobs. It has been close to four weeks now. Extremely dissatisfied with the service with SAA and will ensure never to book any flights with them in the future.