I’m not a Texas attorney but in Connecticut a failure to return client telephone calls is cause for a public reprimand of the attorney. An alternative is to talk to the paralegal.
Did I understand that your husband is NOT paying child support and NOT getting visitation? The two aren’t really related but its tough to understand your reasoning if you are not supporting your child.
Consider getting advice from a different attorney. If you tell them you are considering switching attorneys, most will give you a free initial consultation and will probably give you an opinion about your case. I have an earlier post on finding an attorney.