$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on 5G Get More plan req’d. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req’s are no longer met. See vzw.com/bring-your-own-device for details.
Did you enter into a contract for both services with a combined pricing? If you did, you are pretty much stuck until the contract period runs out.
The more serious issue is whether or not Verizon offers 'dry loop' service in your area (DSL without voice telephone service). DSL is not a tariffed service, so Verizon doesn't have to offer it without telephone service, and in many areas, they don't. So you would have to call Verizon to find out if Dry Loop service is available in your area.