Appalling service

Sent in my Orbitrek in for repairs 3 weeks ago. It had seemingly loose pedals and made a horrible knocking sound when peddling on it. At the end of last week after sitting at the Verimark Durban repair centre for two weeks I was told to fetch it. They had changed the flywheel and told me that all the problems were sorted. I left after paying over a R1000 for the repairs. I came home but could not seem to release the tension on the pedals coz the knob was too tight. After fighting to release the knob, I managed to push the pedals really hard which exhausted me but I discovered then the initial knocking sound I had sent it in to be looked at was still there. I took it back this Monday and on testing it they found the terrible noise still existed so it was booked in for repairs again. Ow i await feedback but unfortunately their phone is never answered and constantly rings. As a result any check or updates needed means I have to drive to the service service centre myself. A couple of staff gave me their cell nos but even those don't get answered. It's three weeks gone and next week I will drive there to check on progress. Nobody at Verimark seems to care enough about their customers.