May an employer record my personal numbers after leaving the company?

My employer was spying on my phone through the CRM service, where he was able to record the call I made from my personal numbers and also the location of my phone. And he was doing the same even after I left the company 2 months back. Not only me he can record the calls of customers till the time he keeps their number in his CRM, I know its inligal to record the calls and mapping the location without informing the other party. But I don't know whom to approach for this issue, is it possible to reach TRAI for making complaint against this kind of activities?