marketing calls to a child despite being blocked

[south28]

My 11 year old daughter has been reciving Vodafone marketing calls , so yesterday I did a web chat and got a block put on them . However , today she has received more marketing calls , so again I have done a webchat and supposedly blocked them again . My questions are this 

1 can I truat that the block is now on the phone 

2 why could the guy I did the webchat with not advise me of an email or written address for complaints 

[BandOfBrothers]

Hi @south28

Is it one of the Vodafone Numbers in > http://support.vodafone.co.uk/Using-our-network/Calling-and-messaging/Calling/38912113/Is-it-Vodafon...

If your daughters phone has a call and text blocking features you can add the number(s) to it to block them. 

Vodafone do not have an email address for complaints.