Customer called about a clogged mainline. Upon arrival, offered to attempt to clear it through the outside clean out. Customer accepted. Camera showed clog at 38’. Attempted to use the cable machine for over a hour. Spoke with the customer about using the jetter and offered pricing, customer accepted. Attempted to use the jetter in the line for another hour. Cleaned a lot of the blockage out but still there was no flow. Offered to pull the toilet in the master bathroom in an attempt to clear it from a different direction. This toilet had also been leaking from the base. Customer accepted. Pulled the toilet and used the cable machine out to 45’ when the drain began to flow. Used the camera again for the outside to verify drain is clear. Drain is clear and flowing as intended. There is a crack or opening in the concrete pipe underneath the back patio. This is most likely what causes the toilet paper to back up. Customer is hoping not to have it back up again. Spoke with the customer