Pick n Pay store account

I have been using this pick n pay store account hence I thought it was a good initiative for pick n pay to have an account for its a good shop that is reliable and good customer service. Two weeks ago I went to buy some products to my surprise my card could swipe it said "pin exeeded" well the lady was friendly to assist to make a call to the customer service it was a night mare to get through. She gave me the number to try at home but still no agent available. It is so frustrating in fact it's pathetic I tried to send an email requesting a call back still today no response I'm very disappointed. What a pathetic service from these pick n pay store account people. I hate to bag for service that I pay for maybe using a different store account could be a better option.