No traffic response in Chat so I'm trying for a less dull, more catchier title this time 
in AIBU. I really need some views/help on this please!
I work part time, 20 hours a week, 4 hours a day. I started 5th Jan this year. I have to return my employment contract tomorrow so I hope someone can just advise me on a couple of points, to reassure me they sound standard. The company has a a dreadful reputation, high staff turnover, etc so I don't want to be duped.I'm a lone parent so I'm trying to figure out which days to book off to save me childcare costs.
Bank holidays
Bank holidays will be paid provided you've worked the last normal day preceding the bank holiday and have worked the next normal working day immediately after.
Does this mean if I book a day's holiday either side of a bank holiday to make a longer weekend for myself, I will lose a day's pay, as they won't pay the bank holiday?
Annual Leave Entitlement
Entitled to 4x your weekly contracted hours (mine are 20) worked as annual leave per annum. You are not able to use this entitlement until you have completed your probation period (13 weeks. I'm currently 4 weeks in). During your first year of employment your annual leave entitlement will be in proportion to the number of completed months worked.
Small print elsewhere also states probationary periods can be extended at the manager's discretion until as and when they decide to confirm my offer of employment.
Does that mean they can keep extending the probationary period so that I don't receive holiday entitlement?