Sales man or sales woman (San Antonio)

I am looking for an experienced sales person with excellent telephone and communication skills.
You must also be an expert with the English language and be able to write an impressive business letter.
We are a service company.
We do AC and appliance repairs for restaurants.
We want you to call our existing customers and get them to give us more business.
We will train you as to what to say but actually doing this should be as hard as selling gold for $5.
00 and ounce.
I am not looking for any fast learners or inexperienced people.
I am looking for only professional people that have the required experience.