Pls help...............

I had signed 300 months contract (25 years) with Pinggir Armada. Actually i also dont know why become 300months contract?

3 months ago someone come to my office n changed my plan to NEPTUNE VOICE..

After changed the plan i find out the bill is very high and a lot of unknown call out number.

What can i do now? I called to they are office says that i wish to terminate the service, they said will penalty balance 300 months fees.