[Q] WM 6.1 pro + VB (VS2005) + sending sms it send triple :(

Hi
I has develoed an SMS sender app using VB from VS2005 and it works fine. however, if i send a message for 2 recipients, for instance, the carrier/service provider discounts 6 sms on my account. :(
I tried to send the same message to my other new mobile phones and only one sms arrives to each phone. however, the service provider discounts 6 sms because their systems registered 2 messages, 3 for each number... Very strange.
If i send ans sms by hand using the phone (instead of app) the service provider only discounts one sms from my budget...


Dim obj As New SmsMessage
obj = New SmsMessage

For i As Integer = 0 To ListBox1.Items.Count - 1
Dim txt As String = CStr(ListBox1.Items(i))
obj.To.Add(New Microsoft.WindowsMobile.PocketOutlook.Recipient(tx t))
Next

obj.Body = TextBox1.Text
obj.Send()

Any ideas?

Thanks a lot

Alex