Directories are never quite that simple.
They mainly depend on how many editors they have working before a site registers on the directory.
They can take up to 6 months and if you tire of waiting and re-submit they may view you as spamming and not list you at all.
Assuming you're going to be listed in two weeks, well, it just isnt going to happen.
If you google window cleaner yourtown you will find, right at the top and very prominent, a list of window cleaners who have registered with google local business.
If you type in window cleaner pershore, you will find that I come first. Clicking on my name takes you directly to my web site.
And it didn't cost me a penny.
People who don't register don't get a listing. It's a small enough investment of 20 minutes work.
So what if it takes six months? (Although it doesn't. It takes about two weeks.) Whist you're wondering who to give your £299 to for no guaranteed results, Google will do it for free and it's pretty much guaranteed.
It's there for the taking ... or leaving.