Regardless if your a customer or not your property has various utilities running underneath it. These utilities may be power, cable, gas, phone, etc. The individual companies have the right to enter your property, service any equipment, install or remove any equipment, etc. in support of their infrastructure.
They can destroy your proerty if they need to and have no obligation to repair it. They do not need to have permission to enter your property (entering your house is different). This has been decided by the US Supreme court and if you would take the time to get off your lazy butt and google Texas State Law you would find the staute that gives them this right.
Because they say everything is bigger in Texas, including laziness apparently here is the actual Texas State Law, feel free to look up the rest of the laws yourself:
Sec. 181.083. AUTHORITY TO CONSTRUCT LINE ON PRIVATE PROPERTY. A telephone or telegraph corporation may enter land in which a private person or a corporation owns a fee or lesser estate to:(1) make a preliminary survey or examination to prepare for the construction of a telephone or telegraph line;(2) change the location of a part of a telephone or telegraph line as necessary; or(3) construct or repair a telephone or telegraph line.
Acts 1997, 75th Leg., ch. 166, Sec. 1, eff. Sept. 1, 1997.
By the way - little piece of advice, people come here and answer questions on their own. While some answers may be clearly smarta$$ish that does not give you the right to call people idiots just because you don't agree with their answer. Pull your head out of your backside and grow up.

