We have 3 Macbook Pros and all of them have keyboard issues. Command key and space keys are few times not working. Often time other keys not registering or doub

We have 3 Macbook Pros and all of them have keyboard issues. Command key and space keys are few times not working. Often time other keys not registering or double entry sometimes. My few keys like A faded off (color came out). Earlier I had MBA which also has key fading issues.