I abc wald xyz in my correct state of mind gives KA wald SA her aik talaaq.
الجواب وبالله التوفيق
As per the situation described in your question, the one talaq your husband issued on August 6ththrough his text message has taken effect as one Talaq-e-Raj‘ai(revocable divorce). Your period of ‘iddah had started from the point when you had received the text message from your husband. During these three months, if you have gone through 3 menstruation cycles, then your period of ‘iddah is considered as complete.
There is no relationship between you and him anymore and you are free to move on with your life.
After the divorce mehr and the living expenses during the period of ‘iddah are considered the husband’s responsibility. If he has not paid you the amount of mehr(owed) then you have the right to demand for it. Since the period of ‘iddah has completed already, you are not entitled to the living expenses for that period anymore.
واللہ اعلم بالصواب