Traffic fine

You a pay fine and few month later you been issued a warrant of arrest ?? With no warning nothing - just an sms saying a warrant has been issued !! What if the cops had to pull me over while i had my little family in the car?? I paid the FINE - however i lost the proof of payment . How do i get a new proof of payment - Lastly why does it not reflect on your system automatically that the fine has been paid . Your service provider numbers are all engaged - some does not even ring . I have been issued a report pf outstanding fines can you not issue a history of payment report ??