Bad service and no communication

I bought 3 items online, paid immediately via EFT and sent proof of payment. First item was received, invoice showed price far exceeding the order price 2nd item received was incorrect size which I Went to the shop in Wynberg to return,, I have received no communication about progress and when I can expect to receive my cash back Third item I did not receive because the amount I paid which is 100% correct per order was insufficient( due to overcharge on item 1) the remaining balance has not been returned back to my account

I have called customer service and spend several minutes waiting to speak to an agent, I have requested call backs, sent emails, even after going to the physical shop nothing has been done. I’m not giving up on the money owed to me by home choice and remind me not to do business with this company again.