There are telephone jobs that you can get that don't involve selling. Big online employment agencies (such as Reed) will advertise them: market research, customer service (complaints, giving information, or following up newly bought products), booking hotel accommodation, energy choice companies. If you apply clearly stating that you have years of experience you should get an interview.

There may also possibly be jobs in your area helping people like police or ambulance phone if you are motivated and can take pressure.

You will probably find colleagues moving in the same direction. Good luck!