Poor signal reseption

In the area where my house is located "jaybird Allen Lane, Decaturville TN 38329. my wife and I have little to no reception for our att service. I experience dropped calls, and often  have no service at all. What can you do to resolve this issue. I have been a loyal customer for years, the service was not this bad just a couple of years ago. we have a brand new galaxy s8 phones that we use. I do not have a land line phone and will not be getting landline service. You guys should look into another tower or fine tune the one in scottshill tn.