Tex. Bus. & Com. Code § 38.058
§ 38.058. Solicitation of Current or Former Customers
This chapter does not apply to:
(1)
the solicitation of contracts for the maintenance or repair of
items previously purchased from the person making the solicitation or
on whose behalf the solicitation is made; or
(2)
a person soliciting business from a former or current customer if
the person has operated under the exact same business name for at least
two years.