Disrespecting customers after receiving payment.

I bought vehicle parts from this company. I was assisted by the man called Barry. I was given a quotation. The agreement was that I must deposit the money and send the proof of payment. Once he receives the proof of payment, he will process it and courier the goods to Mthatha for collection. I did not receive those goods in Mthatha. I brought this matter to the attention of the manager in the Mthatha branch for resolution. The manager raised the query with Mr. Tjaart Kruger of Fedauto Ford Kokstand more than a month ago. I suppose Mr. Tjaart Kruger is the manager of this branch. To my utter disappointment for someone holding such a high position in the company, he has not communicated anything to me as the customer. It is the middle of the 2nd month since I had provided the proof that goods were paid in full to the company account that was provided by them. This is a demonstration of the lack of will to resolve this matter. Mr. Tjaart Kruger knows very well that his company was paid, "why not fulfil his part of the contract?". Why not deal with the customer complaint in a respectful manner? Why has this matter not been resolved in more than a month after the senior management has received a complaint? I am not going to take this kind of disrespect lying down.