Arrived to customers house to change over bathroom sink drain piping from galvanized to PVC. Customer approved to move forward with service. Cut out a three foot section of piping in basement ceiling where I located clog. Changed out piping. I reconnected PVC joint into the functional galvanized with Fernco couplings. Everything is working as should with no leaks or clogs. Cleared out rest of pipe connecting to main stack. Cleaned up rubbish. Discussed with customer estimates and options. Customer approved to move forward with estimate. Customer is satisfied with the service today.