unosis tech unosis technical support this company scammed me india ...

my name is sam i went to google search and got the number of this company as norton support. and i called on that number someone recieved the call and told me that we are norton technical support .finally they told me i ve trojan and my network infected i called after that call my service provider aol. and i came to know that they are scam. they tried to take the money from my creidt card but i denied somehow. what they do take computer access and show different programmes.i was not aware about those softwares .i felt so scared and i turned my computer off.