Clicks online order nightmare

On 7th Jan I attempted to buy a straightener that was on special online only. After several attempts, I manage to make payment via PayU. However, I have not received confirmation of order, nor of payment received. After emailing the service centre again and again...I finally received feedback that the matter was escalated. On Monday 13th Jan, I phoned customer service and was asked to email a bank statement proving my payment went through, which I did. Yesterday I phoned again to follow-up and after the lady asked some ridiculous questions, I received a reference number and a comment that the matter is being investigated. What the hell needs to be investigated? Payment was made, proof was sent. Just give my what I ordered. This was definitely the last time I have ordered online from Clicks. The always take forever to deliver or you get an issue like this. I am fed up.