What can i do

We moved in a new place end of December beginning of January and found out it had bedbugs took them for ever to check it out. When they did they said we don't see any but will send someone out , well the guy sprayed and guess what we still have them. I want to pay for our own treatment and have it taken from our rent but how would I do this? My kids get bit, and because of this I feel like we are dirty people . Even tho I clean and laundry is done folded etc. Dishes hardly sit overnight etc... IDK where else to post this sorry