Lack the ability to provide first customer resolution

This is the second time after 3 years I went to telkom to take out a deal and after such a long time I still experience an POOR customer service. How hard is it to do what is required, I haven't even become a customer and I'm dreading the service. I went to vangate mall telkom to take out "The Big Deal" and trust me they made a simple deal a "BIG DEAL". They requested 3 months bank statement,copy of ID, payslip and proof of address and I'll be able to get the 40gig router same day within 30min. 5 hours later I return to the shop with all the documents as requested, firstly the gentlemen uploading my information looks like his doing this for the first time. After everything was uploaded he says they need to do a credit check and it going to take 3 days! So why create a customer expectation earlier the day saying i can get it within minutes. And why must everything be so a long process for a simple situation. I provided you with what you requested why can't you provide me what iys expected? For all these years later I feel like fool returning to the same store with the same problem.