Chronic medication a chronic headache w MedExpress

For the past 6 months chronic medication has become a chronic headache for me with Discovery's MedExpress service. MedExpress is suppose to make the ordering of my children's repeat medication easy. The only thing that has been repeating is my 25-30min phone calls to them every month. I continually have to reconfirm delivery addresses (that never get's update to the app), redirect courier companies when they have arrived at old delivery addresses, leaking medication bottles never gets attended too, my medicine have often arrive incorrectly, and suddenly my chronic medicine does not get covered by chronic benefit? What the heck is going on? My children's health is being jeopardized.