Antime+ Query re. reset date for included minutes

Could some kind person help me understand how the included minutes are allocated and counted on my friend's Anytime+ tariff, please?

Service started 14 Nov. and billing date is 30th Nov.

Pro-rata line rental paid for Nov. and full amount for Dec. (advance charges)

End Nov bill included about �3+ for some 08 numbers and other chargeable calls.

However, I'm trying to understand why three international calls during early Dec. were chargeable.

The allocation is 300 mins International calls per month.

I'd assumed that pro-rata mins would apply for Nov., and 300 mins for Dec.

But I see that International landline calls on 1st and 2nd December (hitherto included and free) were charged for, but are subsequently free again.

I'm guessing that this has to do with the reset date for the included minutes and the 300 minute quota (or proportional quota for 1st month) having been reached, but perhaps someone could help me understand how this works.

Unfortunately I couldn't find an explanation in Plusnet's otherwise helpful pages.

Many thanks.

The international calls included are only to the 20 top international destinations http://www.plus.net/residential/phonecalls/home/index.shtml?resheader=phonecallstab listed here http://www.plus.net/images/residential/voice/pdf/home_phone_tariffs.pdf which are
International (Top 20)
Australia
Austria
Belgium
Canada
Cyprus
Denmark
France
Germany
Greece
Hungary
Ireland
Italy
Luxembourg
Netherlands
New Zealand
Poland
Portugal
Spain
Sweden
USA

Is this the explanation - if not raise a ticket as there has been a problem with incorrectly charged calls http://usertools.plus.net/status/archive/1228930338.htm

Edited by deleted (Sat 13-Dec-08 21:49:27)

Thanks for your advice, Jim.

The calls concerned were to USA which is on the list.

The calls before and since the early December ones have gone through as 'included', - so I'm trying to work out why these three were charged for.

(It's always the same number in USA)

Regards

Hi again Jim,

Yes, further to previous, I've now had a look at your link to the Plusnet Archive.

I think that you're absolutely right, - a known billing error, which they're working on.

Thanks for your help.