Eldo coaches delay in refunds

We booked tickets in May for September from Durban to Johannesburg then under some circumstances we cancelled the tickets and Dwayne the consultant from Eldo coaches emailed me their form to complete and send back to them and this was on the 10/09/2019 and I sent the forms on the 11/09/2019 and he informed me that the refund process will take 7 to 21 working days. It has been 41 days now and every time I call they keep telling me that we are on the list of getting refunds but they don't know how long it will take. I feel they are not being profession as they said it will take 21 working days please assist as the refund that we supposed to get back is R2900.