WORST SEREVICE EVER

I am at this point in time beyond p*ssed off. Ever since I upgraded my line to 1000 up and 500 down, I have had issues with my connection. I have reported this to my ISP and they have been trying their utmost best to get it resolved, but the support from FROGFOOT is useless. It is a back and forth blaming game. If it is not the router, it is the cable, if it is not this it is that. They have been "monitoring" my connection for the past 2 weeks after several technicians came to investigate and do tests at my house. I physically can not even sign into youtube or any other streaming platform without the internet reconnection the WHOLE time. If we are lucky we have a stable connection for 30 minutes. I pay a lot of money every month for a service I am not getting. I NEED SOMEONE, ANYONE from frogfoot to get in contact with me and resolve my issue??? You are the experts, so surely you should find a solution to my problem???? I am running my business from home and it is impossible to work like this!