API Usage going up - but how?

Hi All, Desperate for help!!
In my account, I noticed that the request count was going up and I was being charged when my computer wasn’t even switched on!!! (I am calling the API from wamp64 in php using curl.)

So I cancelled the api key that the program was using, created a new project, created a new api key and project. Immediately the request count starts going up!!!

Is this a problem? Where can I get help with this because I could well be losing money here!!!