Disgusting Service from Edgars

Since the end of September I have been trying to get hold of Edgars, emails which they acknowledge by sending a message that I will receive a response within 48 hours - this never happens, unsuccessful telephone calls and also trying to use my on line account profile to download an invoice/statement but this too is unavailable. I called in to the Edgars branch in our area but they will not close the account unless I pay the outstanding balance but they cant give me a statement. I have no idea what the balance consists of so refuse to just pay any amount they suck out of their thumbs. How does one get through to Edgars to close an account, are they denying access to our accounts so that they can accumulate funds such as the Club Card, which has been useless during lockdown so really everyone should receive a credit for this service and account protection fees, where these go is anyone's guess. Their service is dispicable and their attitude even worse.