Afzal really gave Miranda the opportunity to get out of the apartment for 2 hours a day and that's when Afzal's men always recorded all the activities Miranda did, including when she met Alex today.
After the first failed visit, Alex sent word that his old number had been blocked by the system and could no longer be used, so when Miranda said she wanted to visit her apartment she couldn't reply to her messages.
Miranda, who knew that Alex was lying just nodded and smiled as if she understood the problem Alex was having at that time. In fact, she also wanted to monitor all of Alex's movements. Miranda had hired several people to investigate Alex while he was behind Miranda. Some evidence has been bagged but Miranda wants to know firsthand so that Alex doesn't dodge.