our house is 35 yrs old, the water company came to our nieghbors house because they had a water leak in the yard, well we thought maybe there was air in the lines, only our upstairs bath, when you go to run a bath not the shower, it sounds like the all the pipes are vibrating real bad, now we get no hot water, what can we check or do for this problem, the sinks work good, the bathrooms and kitchen sink are good, only the tub upstairs, and only the facuet. please help