Sparklefizz
Several years ago now I subscribed to the Red Cross by direct debit, and when I could no longer afford it they hounded me on the phone, by post and then I even had someone come to the house and knock on the door.
Each time the person was very persistent, made me feel incredibly guilty, I would be in tears after explaining that I couldn't afford it .... consequently I would never set up a direct debit again, and would just give a one-off semi-anonymous donation.
Sparklefizz
My retired friend used to contribute £30 a month to the Red Cross.
A couple of years later the persistent phone calls started, asking her to increase the amount to £50, she refused saying she was a pensioner but they did not let up.
In the end she told them she was cancelling her direct debit altogether.