My therapist ignored me 3 times

Is this a sign of therapy abuse? I had been seeing my therapist for over a year, seeing him every week, unless we had to cancel suddenly. Sometimes I had to send him two emails, for him to even respond, so we could have our appointment, but that was rare, so I let it go. Usually he responded in time, so I didn't think it would be a major issue. In September/October we had difficulties planning an appointment out. He suggested a date or two, and I always let him know that it didn't work for me. This kept going back and forth for at least two times, until he asked me one last time in october. I suggested a different date, but this time he didnt respond at all. I emailed him 3 times asking him what date worked for him and he still didn't respond. Why is he not responding to me? We were on good terms our last meeting, and we had been seeing each other regularly for a year, it's just now that we both have issues planning an appointment out, he can't see me anymore? Shouldn't he have at least told me he didn't want to see me anymore because of our schedule conflict? In our sessions too, I noticed he was always 5 or so minutes late, and he often brought his lunch to eat mid session.