Atrocious service

I sent my Kirby vacuum cleaner to the kirby Edenvale service center, but when it was returned to me after a invoice for over R2000, I did not receive my vacuum cleaner. The one I received back is old and dented and the pipes are in a really bad condition, effectively it is unusable. Upon contacting the service requesting my own machine back, they just appear to fob me off. It has now been three weeks of me trying to get clarification and satisfaction and my patience has come to an end. These people regularly pester me to send my machine to them for servicing, but their service is atrocious.