I returned to work September of last year with a verbal and email agreement to begin flex working 3 days a week in January (my request). It became clear by November/December however that I couldn't fullfill all the requirements of my role in 3 days and also that the company was not going to get any additional resource for me to help cover the role. I asked to continue as full time and revisit my flexible working request at a later date. (I hadn't yet signed a contract.) This was rejected as they told me their wasn't money in the budget. At that point I handed in my notice - I had no other choice really as they were'nt giving me the means or resoruce to do my job.
They have now gotten around to recruiting for my role and have put out an ad for a full time position on a 6 month contract. I confronted my boss and asked why there was budget for the new hire, but not for either me to go full time, or to bring in a part time assistant or freelancer to help with my workload. I was told that it is stretching the budget but that they think filling the role with a full time employee is the best option for them and that if I want to, I can apply for my job. They wouldn't accept a withdrawal of my resignation.
I've worked there longer than about 90% of the office, and I feel like they have really pushed me to leave, or at least done everything they could to make my working their untenable. They say they gave me the flex time requested so they don't understand why I'm upset. (Another manager also told me that if staff wanted to work on their time off, it was up to them.) I'm so angry with them, I can't think about things straight. Is it worth my seeking out professional legal advice or is what has happened maybe unfair but not really illegal?