I'm being haunted by someone

You might have psczophrenia

Or worse, they might have schizophrenia.
Buy a dictionary.

My mother who died a year ago hangs around the house from time to time.
The dogs know everytime she decides to linger about. There are times they get set off by her and won't stop barking until back them down.

A friend of ours came over not long ago. She was in the house less than a minute and she asked if we had a spirit in the house. Mom drove me crazy when she was alive and irritating me still.

Get a good exorcist. Look in the Yellow Pages under "Exorcist".

Did you do something wrong to someone? You need to repent, make it right or see a priest

No- it wants me get revenge

Pray to Jesus, don’t do anything wrong please

Where was Jesus when this someone started haunting OP?