FOR the last three weeks I have had difficulty changing coins at banks in North Point. I have been to more than 10 banks - the Bank of China Group, The Hongkong and Shanghai Bank, other local and some foreign banks, during my lunch hour. They all give the same answer - that their stock is low. Most of the China Bank Group branches only have coins available at specified times. I need coins to pay my bus fare. Surely I am entitled to change if I need it. I believe I should get a better service from banks in Hong Kong. NAME AND ADDRESS SUPPLIED