Very poor service!

I accepted your offer for a credit card limit increase on 1 April 2019. I did not accept the full amount granted to me but a lower round figure amount. I accepted the contract on icontracting and was told that it would take 24 hours to reflect in my account. I escalated further and was told that it would take three to five business days. Today is the fifth business day and still the funds aren't reflecting it. I have escalated this via various departments and was told my escalation would take 24 to 48 hours. Nothing was heard in these time frames. Can you please ensure that this is sorted out by the end of today. It is very frustrating calling different departments to get an answer!