Require IHT forms to be sent to me

I called about 3 weeks ago to ask for IHT400 pack to be sent to me. I have still not received it. I tried to call again today but no-one is answering the phone. I am just cut off. How else do I get IHT400 pack please??? It hurts my eyes to try and read on the PC. Thanks in advance for your advice.

Hi,
Please contact the Inheritance Tax team for advice.
Inheritance Tax: general enquiries
Thank you.