If any chamberlain refuses, when instructed by the mayor, to make any payment or pay any expense that is for the benefit and advantage of the town, so long as it does not exceed the revenues he has been assigned to collect, for the first offence he shall lose his annual fee, for the second offence [he shall pay] 20s., for the third offence 20s., and so on. If any member of the 24 or the common council, or any other burgess, shows favour or gives support in word or deed to such a chamberlain, he shall pay 20s. to the use of the community.