Email Response Times

I was just emailing the Revenue this afternoon, and got one of those automated delivery receipt emails back from them.

After thanking me for my email and telling me that it will be processed as quickly as possible, their message then has the following line:

In line with our Customer Service Standards we endeavour to respond to 100% of emails within 30 working days.

What really? 30 days? Is that your target? Surely for a customer service team, they should have an SLA target response time measured in hours rather than days!