Still awaiting for refund!!!!!

Discovery failed to update my banking details over a year ago. They did a transfer into a closed account and expected my bank to release money from an account that does not exist. Finally managed to get thru to them that the account does not exist and managed to get them to change my banking details. On the 09/12/2015 i was informed that a transfer was made to my account. It is now more then 48 hours and no payment has been made to me. The call center can't assist cause they just too useless. Discovery does not even have a escalation process. All I want is what is due to me. I just want them to do they refund so I can in turn pay the medical professional her money. Why does a person have to fight with Discovery to get whats due to them. do they specialize in employing people that don't know what they do?