US Congress asks Pai why he keeps ignoring its letters

The House Subcommittee on Communications and Technology, one of the illustrious commissions of the US Congress, has written to FCC Chairman Ajit Pai asking why he is continuing to ignore communications from elected representatives.
The letter itself expresses appreciation for Pai’s willingness to testify in front of the committee, but asks why he is evasive with answers, refuses to address certain questions or even acknowledge the question in the first place. Attached to the communication