Changing my OB

My Dr.'s office is so frustrating! After my miscarriage two weeks ago they told me by beta was at 6.5 and that they'd call me if I needed to come back for a second blood test. Well they never called. So today I get a phone call that I should have come in last week for another test and that I need to come in right away. I told them that I stopped bleeding after 9 days and so we've started having sex again since the weekend. They were not happy about that. So now my husband doesn't trust them anymore and said we will find a new Dr. I just can't believe how unorganized they are.