Kulula Credits not reflecting and no response

During March a booking was cancelled and the friendly call centre agent assured me that a credit would be passed. The cancellation was done in advance and was offered by Kulula as SA went into lock down. I took the opportunity to have my account credited, and was promised an answer within 6 weeks max. 5 months later no answer,,.,, not response to emails on proof of the cancellation and booking.... no credit or refund.