live account accepting test card

[keyurgrubbrr]

I am using live merchant account credential and i have changed this
ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = AuthorizeNet.Environment.SANDBOX;
to
ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = AuthorizeNet.Environment.PRODUCTION;

but still it is accept test card number like (4111111111111111).

I have used test card(4111 1111 1111 1111) for Automated Recurring Billing. i got subscription id in response.

please guide me!!