How to sue my Local ISP ?

[Deleted member 345628]

I have recently got a 30Mbps plan - 300 GB (6 Months Plan ) and am I want to upgrade to 60Mbps - 600 GB (6 Months Plan) . The difference between the plan is around 600 INR .
But they are restraining to upgrade my plan since they want me to renew plans using the topups which is expensive .
I'm thinking to ask them for a connection cancellation ... Are there any laws that keep ISPs from cancelling connections and refunding my money , so I can get a new connection with my preferred plan .
Their site has no policies or agreements . Terms and Conditions

 

[RumbaMon19]

They need to terminate your connection as soon as you ask them. Do you have a receipt or bill in which they mentioned that security charges are refundable? If they keep on charging then sure you can go ahead.

@vidhubhushan has much more idea about it.

 

[Deleted member 345628]

I mean its not security charges , Its my 6 month plan right .....

 

[Deleted member 345628]

Update: The technician team deducted one month's bill and upgraded my plan

 

[vidhubhushan]

Security Deposit is one time and refundable; installation charges are also one time but usually non-refundable. any Plan purchased and amount given in advance is most of the time in favour of the company and in case of customer asking for termination, customer can not ask for a refund unless specified in the plan. in case you want to upgrade, then it is up to them because the situation is in their favour but most of the time, they don't want to lose the customer so they accept it.