Earlier this year I noticed charges in the section of the bill VOZ - 'A Servicios Avanzados (Novecientos)'  900 numbers dialled. 
On closer inspection I discovered that every day, every month, at between 5.55am and 6.05am a call to the same number for a 5second duration is being charged to my phone.  This may not seem terribly significant, but it adds just over €3 to every bill.  I have called 1004 and spoken to someone who couldn't explain how this was happening, but assured me he would put in place call-barring for that number.  It is still happening - every bill - same times, same amounts.  I have complained a further twice and been told call barring was not in place but would be now - yet nothing changes.
Is this happening to anyone else out there?  How is it possible?  The number is 902198899 but no-one is able to tell me what this number is.  Any ideas????