I don't know of anything out that way (and it's a bitch to get any decent geo-data from their website!), but if you can give me a GPS fix we can find out if it's do-able...
If it is in the Midrand Mews area you might get signal but normally best to give a street name or closest corner to do online check before getting a signal test done. Can always contact me if you like giving exact location to do coverage check first.