Barclays Bank, Dubai — Credit card

I am the sales manager for Land Rover & Jaguar dealer in U.A.E. I really have the worst experience ever with a bank. Many people asked me not to deal with Barclays, but I took my chances.
One of your sales officers (Mehwish Wilson) from Sahara Marketing Services, who is representing Barclays Bank, visited me at my office and convinced me to go for your Platinum credit card. I was very clear from the beginning that I will not sing a blank cheuqe, get the approval with the amount then I write the amount in the cheuqe and sign it. She told me ok wait tell the Department get us the exact amount, after few days she called me and told me that the approved amount is 98,300 AED. So she came to me and I singed on this amount. After 4 days I received the card from the corrier and I found that the approved amount is 58,800 AED. so I have been cheated by your bank so either the increase the limit to the same amount or to get me back the chueqe witch I singed for 98,300 and change it with the new amount or to cancel every thing and get me back my cheuqe to my office and I will take it further from their