Lies, Grumpy Agent and in Breach of own contract.

App**** for an overdraught increase on a Sunday evening, i recived the paperwork and by Monday 8am it was signed and sent back. No response from the agent i dealt with, so i call on Tuesday to see if it was received, Yes, no issues there and its already being processed as per the Agent. Says it takes 48hours from receipt of documents. So I call again Thursday to see if anything has been done, nope, an escalation has been put on the application and i was promised that it will be active on Friday (Today). Being later in the afternoon i call after seeing it hasn't been completed and yet again the agent says she will put it through for an escalation. So all in all, 3 escalations, 1 grumpy agent and 1 lie and im still waiting. The contract and the agent said 48hours from documents received date, so technically they are in breach of their own contract. Whats to do now but write this and expect a call back with some random excuse.