ATM Refund Query

It's been almost a month now where my cousin mistakenly deposited money through the atm in to my closed nedbank cheque account and when they queried it at the Nedbank branch in Park Station JHB they were advices by Lucas that he will query it with the ATM guys in which they left my contact details to call me regarding the query since the money was meant for me. A week later I was called by Lucas advising me that in order for them to refund the funds I would need to open a new Nedbank account that would be in my name after I provide him with the account details to process the refund.. on the 19th FEB 2018 I was then hle to open the account at Dipkloof Sqaure then I email my account details to ********** 2 days later which was the 21st Feb I called him (Tel: ********** ) asking about the refund he advised me that surely the money would be in the account by Monday the 26th Feb however he'll find out for me then get back to me since then today being the 27th nothing has be done, no response from Lucas nor money refunded back to me. I sent him an email on the 27th still he hasn't called or let alone respond to my email. I want this matter sorted out immediately as this has cause so much inconvenience on my side. Busi