Hi Shorty. To complain about the service you had from AOL, I would firstly write a letter, detailing exactly what has / has not happened, since you signed up with their offer, to the following address.
Make it fao Member Services
AOL (UK) Limited
68 Hammersmith Road
London W14 8YW
Stating that you give them 14 days in which to sort the issues at hand out. If (When) they dont give you a satisfactory reply, you can take it even further, by complaining to the ISPA (Internet Service Providers Association),
ISPA - Home
The ISPA is a kind of ombudsman service, which all ISP's sign up to, and agree to abide by their rules.
The ISPA will launch a investigation, and fingers crossed, get you what you want.
If the ISPA cannot solver the complaint, you can then take it higher to the ombidsman.
As a side note, i took aol as far as the ombudsman a few years back, and it literally cost them millions, to solve the problems which they just did nothing about, yet knew what was going on. (Hackers / Crackers were gaining access to aol's servers in Germany, getting user names / passwords, then trolling the chat rooms, plublicly announcing names, addresses, and sighting derogatory remarks to everyone. Use to the report feature did nothing, as the accounts werent theirs, and the crakers did not care about the account in question being TOS'sed.
Long story, but I do know the ISPA is the way to go.
If I can help any more, please dont hesitate to shout.