Vickymay:
You seem to understand about the charges court case so not much to add there. You are entitled to register a complaint but it won't be processed until the legal action is exhausted.
Several specific pieces of advice for you.
(1) Don't move your pay. The reason for that is that overdrafts are repayable on demand and if you stop funding the account the bank will recall the overdraft.
(2) Open a basic bank account at another bank.
(3) Transfer your spending money every month to the basic bank account leaving enough to fund your main account.
(4) Lock away your main account debit card and withdraw cash using only the basic account card.
Meanwhile read the terms and conditions for your main account so that you understand exactly what is hapenning.
Regarding not paying the fines, unfortunately you can't do that. You do not get sent a bill to avoid paying, the fines are charged to the account.
BTW you mentioned a savings account. I'm assuming there is nothing in it otherwise you would just have paid off the overdraft but if there is be aware that under "set-off" the bank under certain circumstances can dip into it. You mentioned a credit card. If you have available credit maybe you should pay-off the overdraft. The bank has already refused to refund the charges so your only hope now is to wait for the charges case to be decided. Paying off the overdraft won't affect any rights to a refund of charges - but will undoubtedly reduce the risk of more charges.