@Katrin Yes I am, no it wasn't, this is where it gets confusing they asked me to give in my notice to change my contract I haven't done this as have been back and forth with my employer but they won't change my contract unless I give in notice and they won't let me come back in without a new contract so this is where I am getting confused on whether I am employed or not
Are you in touch with your line manager? Ideally they should contact on your behalf. 4 weeks is too long i wouldn't give more than a week for them to sort it out. Maybe there's a number you can call? Also unless you're on a fixed term contract your employment just doesn't automatically end
Sounds dodgy, why do you need to give in your notice to get a contract amendment? They should be able to send you a new contract which overrides your current without you resigning. Personally, I’d be calling them, too easy to ignore emails.
It sounds like you have put in a flexible working request which can lead to new contracted terms. There are rules they must legally follow for these requests. However if you are an employee on a permanent contract, they cannot simply request you resign nor can they refuse to honour your previous period of employment. I would press them for an urgent response as how they are treating you currently is unfair and potentially unlawful, depending on your current contracted terms and employment status. Please call Acas who can give you more detailed advice on what to do. It's a free service who are they to help with employment issues.
I assume you are based in England. If your contract is still in place and you were not on a timely fixed contract and your employer has not served you notice, you are still employed. I assume what you are describing with new contract is your current contract getting amended as it will state different hours. This will only then come into effect once it has been signed by both parties.