I got a spam MMS from my mobile provider, 3, this afternoon with a short video promoting Yahoo! Go. At the end were some instructions:

We’d like to keep you up to date with what’s now on 3. But if you’d prefer not to receive further messages just send us an email to preferences@3mail.com quote your 3 phone number in the body of the email and type ‘opt out MMS’ in the subject header.

I duly did that and received an automated response telling me they would deal within three days. A few hours later I received a phone call from 3. First the agent asked me to confirm my details – you called me, confirm your details! Then she asked me if I would like to opt out of 3 MMS – well, yes, clearly or I wouldn’t have emailed. And finally she politely asked me if I was aware that I could do all this on my phone through the My3 web service. I politely advised her that maybe she should be telling that to whoever wrote the MMS.

Seamless.