Housemate agreed prior to wifi and now isn’t willing to pay England

Housemates agree to have wifi installed but it is under my name.

It is written in the tenancy agreement that all tenants should pay the bills. I will include the attachment showing the wording.

The agency said since the contract is in my name only, they wouldn’t be liable.

“To pay all charges falling due to the following services used during the Tenancy and to pay any standing charge for those services which reflects the Term of the Tenancy:

Council tax, water, sewerage, gas, electricity & other fuel, telephone, broadband, satellite television, cable television, and TV license.”

Do I have any recourse? This is turning out to be a house of hell because the very same housemates were aggressive and smoke weed all day. Agency won’t do a thing about it.