overheating

What is your question?

canged water pump,drove home light came on low on coolant,called up said put more coolant in,did that,3 days later no heat ,drove to the shop heat came back on,cleaned out runnoff tank,next day overheated.could it be the pump?have changed the radiator,because it was clogged top hose got hot bottom hose cold.put in new thermostat,drove the car for a week it was fine,drove home from work overheated,all the coolant gets sucked into the reserve tank.still overheats could be the water pump be the pronlem?