Ion Exacense — Aquaguard

I logged a call with Aquaguard for maintenance and installation, however the technician that came was from ion exacense, misrepresented saying they are Aquaguard service providers and took an AMC amount.
The Aquaguard stopped working within 30 mins and on follow up with Eureka Forbes call center again, they informed that this was not their service provider, question is than how this company got the service request and our address and contact.