Unreliable company ethics - Pharmacy direct

Why do you deliver the wrong medication. And make promises to rectify the issue. Charge me for the wrong medication. Say the whole day you will call me back . Call at 16:58 let the phone ring 1 time . And then at 17:00 send a sms saying you tried to call me??? And then I can not call back seeing you only work till 17:00 What low rated service do you run .? Do you just call so that your supervisor can see a call was attempted. ?? But you never actually attend to any of the company’s paying customers requests? Then I get threatened that I will be blacklisted due to non payment but I have emailed the payments 4 times with my Id Number as a reference