OVERBILLED

4/13 i was credited 139.36 from march then on 4/19 billed 139.36. On 4/8 was billed 75.01 for what? Then on 4/10 billed 10.67 then on 4/10 again was billed 126.69 and still getting notices my license have expired. I have money to be credited from you folks. Why was the extra billing caught by you? Why am i still being notified my coverage has expired? How soon will i be credited? Thank you.