local net Isp user Fresno and all USA Internet

My internet speed has been getting slower and slower, Local Net charges us when we ask for help. whether we get our problem solved by then or not. When I first signed up my speed on the internet stayed pretty constant at 52 k to 56 k, then 50 k to 52 k, 45 k, 40 k. There have been times when I connect at 9 k, 19 k and 24 k. 4 years later the best I can get from my connection is 45 k at best. I would be ok if I were able to get 50 to 52 K. Right now my speed is 40 kps.

According to the tech that charged me for asking, says its my phone line connecting to my modem. Nothing has been changed on the phone line, its still the same 56 k modem. Makes me wonder if they don't deliberately slow down internet connection speeds to sell you their Express dial up which all it does is remove some of your web page graphics to make it look like their speeding up your web surfing. I think it's time for me to start looking around for a better internet provider.