Yes those phone calls help. It will remind many to vote.
If you ever work the phones you will find that your number must be recorded to show, you are who you say you are but the number that comes up will be either all zeros. or unknown caller when you call someone on the list. It is all automated.
In todays politics more is needed than just a vote. If everyone that is able got out and worked for their party, things would change but that will never happen. So we get what we get and deserve it.