Vespa — No service center

Hi Vespa, I own a Vespa VX. I had a minor accident and had to do some minor service at your registered service station at Thrissur. The response from the service station was so bad and abusive. They said, they won't be able to service this as the part are not available from Vespa and their contract with Vespa is to expire. Few days back here at Thrissur new Vespa showroom opened, I have contact them they said that they don't have the parts yet so that they can't service my Vespa? What should I do? I have emailed several times with regarding same issue and I have tried my times in your toll-free number, no response. I am waiting around four months to repair my Vespa :(. Please do the needful as soon as possible.