Is the CPI relevant and meaningful?

From all counts, the people affected by the high cost of living will have little faith in a CPI that does not reflect their plight. When prices of all their basic needs are shooting to the sky and the CPI said it was up by 3.6% is really a mockery and very insulting.

If the CPI is spouting nonsense, it should be thrown out or replace by a more realistic and relevant ont. Can someone post the