Absolute worst customer service!!

I purchased a Dell pen on PC link computers as they were very affordable compared to other online shops. The pen purchased was the incorrect one and I wanted to return this for the correct model that was compatible with my computer. The return was done overnight from my side at my expense. It is impossible to phone them as their phone lines are off. The worst part is actually getting your money back. It is 2 weeks later and still no feedback. They currently have the pen as well as my money. I have been in contact with George Vorster, Jaco Venter and a Nico. Imagine the frustration after 33 emails (this is the only communication available) and I simply cannot get my money back. The last four days the only response has been Zendesk tickets. I would strongly recommend you rather pay a bit more money and buy from a different store!! Clearly these guys are not aware that the most important aspect of a business is good customer service, or at least communication.