Dunno your budget on this
But something like https://www.takealot.com/tp-link-tl-wa850re-300mbps-wi-fi-range-extender-with-1x-ethernet/PLID40401708 should also work.
It connects to your wifi and creates an Ethernet bridge, so you would plug in the printer to this ethernet and it should be the...
How about just getting a spring and a micro-switch? You should be able to get both at a hardware store just pick the spring weight to be higher than the changing station, put it in one of the corners so if you place a baby in it, the corner goes down a little bit triggering the micro-switch?
If...
Not sure in what area you are, have a look at Mantech (their website is finicky to navigate)
https://www.mantech.co.za/ProductInfo.aspx?Item=352M0244 (per meter I think)
https://www.mantech.co.za/ProductInfo.aspx?Item=52M0064 (per 100m roll it seems)
Robitics (https://www.robotics.org.za) could...
Just something to add here, and assuming my math checks out, even ignoring things like penalties I don't think OP will get anything back.
OP stated she paid :
R7000 X 12 (R84 000.00) plus R7000 deposit upfront.
During this time a debt of R55 000 was accumulated, which INCLUDES the rent for...