Spending cap

[RKK]

Is it possible to set a sending cap with broadband? if yes, please guide me how 

[Keith_Beddoe]

No, its not possible with BT Broadband.

I assume you are trying to limit device access.

[RKK]

Thank you. 

I'm actually just trying to avoid young family members making calls from the phone that aren't included in the package such as 123! which I get charged for everytime

[Keith_Beddoe]

See https://www.bt.com/help/landline/calling-features-and-security/all-about-call-barring