Voice Control Does Not Respond

I am new with I Phone only a week or so. I cannot trust the Voice Control. I say HOME and it takes me to JIM I say UNIVISION and it takes me to HUMBERTO I say WALGREENS and it takes me to DOLORES ???

IS THERE ANY WAY TO CORRECT IT I would rather say once or twice each name of my contacts and record it so that the voice control might recognize it as I did in previous phones... I simply cannot use it!

Please if somebody answer be as kind as to leave a note in zellagro@hotmail.com thank you

 

Thank you very much I am trying It is helping somewhat but not exactly. Thank you