ANTHONY'S SEPTIC TANK SVC

I'm not really happy with Anthony's Septic Tank Service and I won't be calling them back. I've used them before, but they weren't very good this time. They left about one foot of sludge on the bottom of the tank and told me they couldn't take it out. I talked to someone else who told me that wasn't true, that they could take that out. I won't be using them again nor recommending them to anyone. They told me the first time that they came out that I had a 10,000 gallon tank. The second time they came out, they told me I had a 12,000 gallon tank and that it costs more because it's bigger. I don't understand that. I never had it changed but they're telling me it's bigger. They also said we need a new septic tank and I don't know that that is true. It's been working fine. I'll be looking for someone new to come and do it next time.