I used the Labour Party telephone survey app called "Dialogue". All you need to do is to register with your Labour Party membership account, then have a laptop, tablet or computer with internet access and a phone (preferably a landline which is much cheaper to the Party but you can use a mobile phone). It is completely free for members to use if you have access to unlimited internet.
I started ringing late Saturday afternoon which I have not done before but thought it would be a good time to ring. The first person I spoke to was very suspicious about why we were ringing since she had lived in the area for 30 years and never had a phone call before from her local Councillor. I assured her that while telephone contact was relatively new, we had knocked on her door at least once every 4 years for the 3 terms I have been her Councillor.
Interestingly, the suggested script for this call asked for views on the MPs second jobs scandal and views on the Tories and Boris Johnson.