Bad service from head office

I received an SMS an a call from Woolworths saying that I now qualify for a credit limit increase on Woolworths store account because of the way I conduct my account. I then agreed to a limit increase because that is what I have been always looking for all the time since I been having an account for the past 4 years. I sent the latest three payslips as per the SMS and was faxed at the Sunnyside branch, still after two days I received another SMS saying I should send bank statement for the past three months, of which I did at Menlyn in Pretoria. However there is no communication from them since I last got a call checking if I did that. I am unhappy with this service especially after being with them for so long. Not happy and not so satisfied with their business.

Thank You