No reply to emails or phone calls

I have been trying now for 6 days to get hold of the deposit department. 20 calls and 10 emails. I made a deposit and it's not reflecting. I emailed proof as they have requested but according to them they have too many queries to deal with and I already used 100 min of airtime. The number I phoned is ***. The number that ends with 33 said that unfortunately they are in a different department. This is crazy!!