Account not settled after a week of payment.

Hi. My bank paid an settlement amount on my behalf. It has been a week and the account hasn't been settled. I called Edgars last week and they advised that the money hasn't been received. I called my bank, they provided proof but edgars is giving me the run around saying that the proof is not the correct proof of payment they reuqire. I then called my bank and they advised that edgars send me an official letter stating that they havent received payment. Edgars responded that they dont send letters. Im now stuck but edgars cannot assist me. Please give me a call as i have to deal with various people and have to start from the beginning all the time. Its extremely frustrating.