I thought that my sump pump had ended its life and needed to be replaced. The contractor I found through Home Adviser came out the following day and arrived reasonably promptly. The technician tested the pump and it wasn't responding. He then checked the breaker panel and all seemed well. However he checked to see if power was reaching the outlet, it wasn't so he tripped some breakers and reset them and the power to my pump came on and the pump works so a replacement wasn't necessary. He charged $75.00 which I think was reasonable for a call-out fee and time spent.
Most plumbers wont mess with the septic tank. We deal mostly with components inside the house. Did you have a vent pipe in the yard (often looks like a candy cane made of PVC) before the repair but not after? If all he did was replace the line it shouldn't cause a smell inside the house. All plumbing fixtures inside the house should have properly functioning traps. Those traps would create and maintain a water seal against the sewer gases. You should have at least one vent through the roof to equalize pressures within the drainage system. This prevents positive pressures within the system (caused by fixtures discharging into the lines, ie toilet flush) from pushing gas out through the traps, and negative pressures (the waste in line will pull air behind it like your finger over the end of a straw) from sucking water out of the traps.
They advertising 24/7 service, when I called on Sunday February 11 2018, I was told Sunday service was not available. I even called twice to be sure I heard the correct information. Again I was informed no service on Sunday. I mentioned their advertising said 24/7 service. I was told no service on Sunday. I asked what 24/7 meant and did not get an answer. I am Advantage Plan member but this made not difference. This is a complete waste of money. Don't buy the Advantage Plan. This company is a complete fraud.