Upstairs at Specsavers in Bolton town centre has the worst customer service personnel. Those downstairs are fine, especially Mohammed. Two ladies pride themselves in being aggressive towards customers as well as shouting at them. Sadly, they do not like it when you ask to speak to a Manager to complain about their appalling behaviour. One of them is supposed to have worked there for thirteen years yet, is happy to put down the phone on a customer that has just spent £200 in the store after shouting at the one for merely asking to speak to a manager to complain about the one's dis-satisfaction regarding a product. What a disgrace - an absolute disgrace!! Such staff MUST be sent on customer service training because they don't seem to know that it is the customer that pays their wages.