NO AFTER-SALES SERVICES, BEING IGNORED BY VODACOM SHOP

I bought a new Huawei mobile Wifi router from Vodacom Shop in Clearwater Mall on 19 December. The person who assisted me is Reghardt - the shop number is ********** . I was very pleased with the service he gave me and told him so. However, the after-sales service DOES NOT EXIST!!!! I have left two messages for him to contact me urgently as the router is not working and I cannot connect to the Internet at all via the Wifi router. I have been battling to get hold of him today. Every time I call he is either out or he is busy with a customer. He is not replying to my messages. No call back. No nothing. I am a pensioner on limited funds and am wasting my airtime on my phone as I have now called back FOUR times, to try and reach him, to NO avail. I therefore retract my compliment. After sales service just does not exist. It is a fact that shops are only out to make money and they just could not care less about any problems customers might experience after the sale. There is NO email address to which I can send my problem/complaint. I have to physically get into my car and drive back to that shop in order to get the problem solved. I paid a lot of money for that router. Now it just won't connect to the Internet. And absolutely NO after-sales assistance.