bad cell phone reception ????

[lago]

Hello there, I have an unusual qstion? may be some can help with an idea, or has a solucion thx, in advance.
I live in riverside Ca. and my house is located in a hill?? it is the last at top of the hill.
And the deal is that I get so bad of cell phone reception?? it drives me insane and, as soon as I m just a few yards down hill the reception is perfect is there any antena reciver something that I can use??affordable price. ofcourse,
and I just walk up the drive way and phones just go crayze.
There is no big power lines above or towers or somenthing that I could think it would interfiere don't know just want to cry!!!!
pls, help!!!!!!!!!
Thx.
PS. since my house is the only one in the top, ofcourse is the only one that loses signal all others are just fine.
_________________
life is good