Best answer by Mohammed
Your inclusive minutes will cover calls to 01, 02 and 03 landline numbers, as well as standard 07 mobile numbers.
0800 and 0808 numbers are free and carry no cost just like contacting our Customer Services.
If you call the 101 non emergency line, there's a 15p one-off charge applied but no charge per minute for the call.
Non-geographic numbers/special rate numbers that begin with 084 or 087 have an iD Access Charge of 45p per minute and the company/business you call will have their own charge on top of this.
The same applies to 118 and 09 numbers but we'd expect these charges to have a higher rate set by the company.
The rest of the call charges can be found here: https://www.idmobile.co.uk/help-and-advice/call-charges
We can understand you purchased the SIM from Carphone Warehouse, but the stores have premium numbers for contact which will incur a charge for calling. This is why you have been billed for the call. Calls to either Carphone Warehouse Customer Services or iD Mobile Customer Services are included for free within your allowances.