Appalling Customer Care

I cancelled the Med. Aid, by sending in the appropriate form, in February. The debit order still came in, in March and April. I emailed them and I had no reply. I called them and I was put on hold for 29 minutes! I called again and the operator gave me a Ref. No. and said they will call me back. Nobody called. I called this morning and again I was put on hold! They Customer Care is ridiculously useless!