Very poor network and customer service!!!

We have been experiencing a very poor network lately, a technician came he was paid the network worked perfect for few days now it's back to being on and off every 5 minutes, I am currently chatting to one consultant who is very rude who is just assuming that my devices are far from their devices, I asked since when bcz everything is in the same room then the response was that everything seems to be working fine on our side and that's it they no longer willing to assist me??? I guess I need to start shopping around as I am not needed as a customer.