Generally, if you notify the landlord by certified mail, return receipt requested, about an issue in the rental property that is a threat to your health or safety, the landlord has a week from when they receive your letter (or notice of your letter) to fix the problem. If the landlord does not fix the problem, you may have the right to terminate your lease, sue the landlord for $500 plus one month's rent (plus actual damages, court costs and attorney's fees), and/or obtain a court order requiring the landlord to fix the problem. You may want to consult with an attorney to determine if you have taken all the steps necessary to legally terminate your lease. Generally, if you are entitled to terminate your lease, you should give the landlord written notice (preferably by certified mail, return receipt requested) that you are legally terminating the lease due to the landlord's failure to make necessary repairs within a reasonable amount of time.
This answer is offered as a public service for general information only and should not be relied upon as legal advice.
Texas Property Code § 92.052 LandLord Duty to Repair and Remedy
A landlord shall make a diligent effort to repair or remedy a condition if:
(1) there is notice to the person to whom or to the place where rent is normally paid;
(2) the rent is not delinquent; and
(3) the condition:
(A) materially affects the physical health or safety of an ordinary tenant;
TENANTS REMEDIES FOR LANDLORDS FAILURE TO REPAIR:
(1) terminate the lease;
(2) have the condition repaired or remedied according to § 92.0561;
(3) deduct from rent, without judicial action, the cost of the repair or remedy; and
(4) obtain judicial remedies according to § 92.0563.
§ 92.0561 TENANT'S REPAIR AND DEDUCT REMEDIES
(a) If the landlord FAILS TO MAKE REPAIRS THAT AFFECT THE TENAN TS HEALTH OR SAFTY the tenant may have the condition repaired or remedied and may deduct the cost from a subsequent rent payment as provided in this section.
(b) The tenant's deduction may not exceed greater of one month's rent or $ 500, if the tenant's rent is subsidized rent shall mean the fair market rent determined by the governmental agency or a reasonable amount of rent under the circumstances.
(c) Repairs and deductions under this section may be made as often as necessary so long as the total in any one month does not exceed greater of one month's rent or $ 500.
THE TERMINATING TENANT GETS:
(1) pro rata refund of rent from the date of termination or move out, whichever is later;
(2) deduction of security deposit from rent without necessity of lawsuit or obtain a refund of the tenant's security deposit according to law; and
(3) not entitled to the other repair and deduct remedies under § 92.0561 or the judicial remedies under § 92.0563(a) (1) and (2).
(g) Lease must contain language in underlined or bold print that informs the tenant of the remedies available under this section and Section 92.0561.
See the Texas Property Code Section 92.056, (available at http://www.statutes.legis.state.tx.us/), for all the steps the tenant must take to preserve their rights if they paln to do the repais and deduct the money from the rent.
Since attorney's fees are recoverable you should beable to have a lawyer help you with this matter.