Suspicious business conduct

I received a call from one of their consultant who said they are just informing me that i qualify for an *** amount, and i told them that i didn't process any application, and i was informed that its not an application, just being informed.

2 min after that call, i have received about 9 calls from their sales department, hut the numbers they are using looks suspicious, and i called back to AB to enquire on what is happening, now i am told that i need to verify myself on their pop-up message that they have sent. But i cannot do that cause i did not have any product with them.

AB seems to operating a suspicious business or maybe their representative. Be careful when you take calls from them and what you say on that call.