Is your service overhead or underground? Check your breaker and make sure it is not tripped. If you service is UG, you could have a faulted leg, or have a bad connection at the transfomer, pedestal, or weatherhead. To be on the safe side, call your provider and report a part out.
You lost a leg I. Your power. That explains why only half house is on and no 220. ( your power comes in on two 120 lines, which gives the 220 when attached across)