Anyone ever use or have experience with those companies that say they help patent, design, etc...

I thought I would just work out a simple idea I have myself. But I am taking on new duties and time is stressed.

I have no experience drawing technical diagrams in axonometric projection of any kind, I don't know any patent lawyers and how they work (do you need to have your design in certain format? will they provide design and engineering help if needed?)

So if I call one of those late night commercial ads claiming that they will help, will I basically get scammed?