I temporarily workded for TSS.

I temporarily workded for TSS.
I was supposed to work part time because I have an other job, but they made me full time without my consent.
Imstead of being part time permanent position they wanted me to do full time permanently, also when you have time off they call you and say come to work today and sometimes you only have 1 hour to get ready and be at the location.
On top of that they have an unstable rota and yes as a firm is very understaffed.

Regarding holidays instead of giving you 28 days per year by law, they only give you 1 hour worth of holiday each day you work, like seriously...
I mean this is a total pisstake...
My advice is avoid this firm please!