Help pls: term time pay & holiday mess/confusion part 2

[Shoppaholic]

Full time employees work 35 hours per week per annum and get 30 days holidays (22 plus 8 bank holidays) so if you take off their leave, they effectively work 46 weeks per annum. I earn £22000 pa pro rata to 40 weeks term time and I work 28 hours over 5 days. HR says my annual leave entitlement is 4 weeks and this is paid in my salary spread over 52 weeks. Apart from the May Bank Hol, I don't get any leave I can take during term time.

Further to my prev post a bit further down, my HR is refusing to budge saying their calcs are right. I'm sure they're not. I've rang a few local employment lawyers for advice but funnily they've all said they can't do the calcs for holiday entitlement without the business link calculator which isn't working. I find this very odd.

Can anyone advise what I can do as we are a small private business? Thanks. I need to establish my annual leave entitlement and pro rata salary with proper guidance as HR's figures don't tally with mine.

Not sure if this is correct but I should be doing something else so am nicely distracted:

F/T will work 52 weeks x 35 hours pw = 1820
You work 40 weeks x 28 hours pw = 1120

Therefore, 1120/1820 x 100 = 61.538% of the total hours

FTE ann leave allowance is 22 days X 61.538% = 18.46 days for you
PP hols is 18 days x 61.538% = 4.93 days for you

I'm not sure whether the allocation re ann leave and P&P days is correct there but it's easier to convert it all to hours to try to workout how it should be.

This needs to then be converted to your pay as you get paid it. 18.46+4.93=23.39/5=4.67 weeks paid within your salary.
22000/52.14*44.67 (i.e. 40 weeks plus 4.67 for hols and bank hols) = 18848.10.
You then work part time so 18848/35 hours * 28 hours that you work = 15078.48 per annum. 1256.04 per month gross. What are you getting paid per month at the moment?

Thanks guys. I posted twice, obviously too late for me! Pls see my other posts. My original one was posted about 2 weeks ago and the most recent (same title) last night.