Deleting Customer Records

I need to create a function that deletes customer accounts and related data (contacts and addresses).

I tried using delete_from on the customer table but this still leaves the contacts table unaffected (with orphaned records)

I conjecture that perhaps I need to call the delete method on the table which should remove the related records, but I looked the delete actions on the table which do not seem to include contacts and addresses

Not sure the best path to take...perhaps delete using CustCustomerV3Entity entity?

Tanks in advance