You'll probably have to be more specific as to the wattage and probably Dell series.
Hope yours is to USB C, then you get something like: https://www.alibaba.com/product-detail/Laptop-Power-Adapter-Connector-DC-Plug_62537356888.html
You'd have to get from ali express or e-bay or something like that, these are not stuff you really stock in South Africa as rarely bought.
Do you have any idea where I can get a dongle from? My charger pin should be the Dell 7.4 x 5mm one. I'm willing to buy one internationally but can't even find it on Ebay.