unacceptable service

I'm very angry regarding Medshield I'm under chronic with them I admit that I did get a notification in December alerting me that pharmacy network has changed. this is a huge inconvenience because I went to Dichem in hatfield and then the referred me the original dischem were I submitted my script and when I got there they couldn't help me they said the person responsible has already knocked off. this is a huge inconvenience i understand that the service provider has change due to whatever reason but now why does it affect existing script? why is Medshield inconsiderate they don't care about me as member. I had to pay the levy since I was in need of the medication. they are inconsiderate and selfish now i need to runaround like a headless chicken and get my script and then go to clicks whats even annoying is that they could have communicated with me in time sies this sucks and I'M VERY ANGRY my premiums has increased by 15% and yet I get ******* service from them. this is not fare i need answers they must make exceptions until my script expires.