Multiple wifi connection visible

I have a TPlink wifi router and a toshiba laptop, the problem is the following:
My wifi connection is working, but I see more and more available connections listed on the laptop
(i do not use any addittional wifi softwares).
I am sure that my wifi router only supports 1 connection, however with the laptop I can connect to any of them, with the same pw.

Let's say the wifi connection's name is: TEST
On the laptop I see these connections: TEST;TEST 2;TEST 2 3;TEST 2 3 4.
so I'm pretty sure that the problem is with the laptop.

I use the ccleaner sometimes, I guess there could be the problem.
now I'm playing around with the ccleaner's settings, but i don't know how to remove those waste connections from the laptop.
also there is an other option in my router called "SSID broadcast" which shows the connections id, as they described, maybe this is importanat at this problem.

thank you for any replies, this case is becoming really annoying.

If Test 1/2/3 are duplicates of your own test network, you can just go to Control panel- Network and sharing center- manage wireless networks (in the left pane), then remove the offending networks, leaving only test. If you tinkered with the network settings, these may have been created. OTOH, its possible there are other connections in the neighbourhood (not yours) that too are named test. So first remove the redundant connections in the network and sharing center, then give your network a more unique name.

As for SSID broadcast that simply transmits the network name into the open air, when enabled. All these networks showing up means SSID is enabled for each, but SSID is not responsible for their existence in the first place.

You cannot control SSID broadcast for other peoples' networks.