Extremely bad service from clicks online and customer service

I do not like to complain and give people ample opportunity to correct a wrong but this is becoming ridiculous.

On the 23rd of October I purchased online with clicks , it was a buy 3 and get the cheapest one free.

My reference number ***9 The app instead of charging me for 2 it charged me for all 3 items.

I have been calling and emailing since the 23rd of October up until today 13th of November. I sent an email this morning and all I get is automated responses saying someone will be in contact.

Nobody has been in contact with me after making numerous calls to the call centre , I am told that the person dealing with me will get back to me but nobody ever does.

From the 23rd October till 13th November is a total of 21 days already which is ridiculous.

I don't think I'll ever use clicks online service again and will advise others not too.