Who is the customer ??

I was told that I cannot go on with my chemist of +20 years . The first delivery was wrong medecine with the new "chemist". Send me the correct one for the next month .In December I tried to contact them and it seems that they have close down . Discovery DID NOT follow up .They did not contact me to correct the problem but I am on chronic medecine and been end of December we know that it slows down . NOT impressed by Discovery to push me to use their pharmacy but not helping to solve the problem when the prefered pharmacy close down .I am (we are ) the customer and should look after us as well not just a one way street . They DO help me but why spoiling the "friendship" and I must write this message to be able to speak to somebody who should have the authority to solve this problem for a long time to come ..