Hathway — Getting call from Tele-caller even after disconnection due to non service area

Annoyed by calls - even connection dismissed and DND activated
You people keep on calling me though the connection is dismissed and DND is activated.
Seriously pissed off with your calls, daily from different numbers around 5 calls i am receving. even i am not able to block hathway customer care call centre calls. at this point where we have all facilities/technology i am not able to block you people.
called customer care and informed them everythng activated DND still i am receiving the calls. Mailed to hathway helpdesk multiple times. don't call me nor message me.

My ACCOUNT: [deactivated]

Till now i have blocked around 120 numbers from past 2 months, daily 4 to 5 calls, what the hell is this yaar...????

in my life i will never use hathway nor i will recommend it for sure...

Regards,
yours poor X customer and will never take your service even though I want to