Welcome to the Q&A Forum

Hey Jurgen, AdWords reports the number of times your ad has been clicked. Analytics visits are not clicks, but unique visitors. If the same person clicks on your ad 11 times within a certain somewhat short period of time, AdWords will show 11 clicks and Analytics will show 1 visit. If you inspect your server logs, you should find a record of the 11 clicks along with the ip address, date and time of the click.

I'm not sure if this results in the large discrepancy you are seeing but it could be responsible for some of it. Hope that helps! Let me know if you have any other questions.

Justin

Yeah I've never heard of this. The other thing they might be doing is just optimizing the accounts they manage to spend less money after they take over the management of them. Optimizing bids, using negatives, and going after only highly profitable keywords could help them reduce costs and then they just keep the savings over the 5% they are guaranteeing you?

If they are still leaving the account and billing in your control, you'd be able to verify this. Did they say how the billing is handled? Either way, this sounds highly suspicious.