Check filler hose are top of gas tank for damage.
cause
Yes a clogged VENT pipe can cause a sluggish drain
If they filled the vehicle, sure.
you have to pay first would be my guess
Yes, overfilling can cause smoking, and you need to drain the extra out.
A raidator in need of a flush will not cause a battery drain.
they are killer
Shorted diodes in the alternator.
If the gas pump keeps shutting off , try putting the nozzle in all the way and then pull it back about ( 1 inch ) A gas station attendent told me that , and it worked for me . Give it a try
A faulty pump, a faulty switch, a faulty release valve on the drain pipe.
Your alternator could be bad.
Any relay could be the cause.