I suspect your alternator has failed again or there is a wiring problem - regardless of the cause, your charging system is not functional - and you're simply draining/destroying batteries. The clicking sound is the starter relay not getting sufficient juice and stalling while driving indicates to me the car is/was running on battery power alone. There was likely nothing ever wrong with the starter motor as stated by iminhell.
i second this. i had a shitty rebuilt autozone alt and it died within a couple months. they may be cheaper but, the quality is horrible. bought a brand new alt and never had a problem. but also check ur wires like stated.
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