Visitors to UAE: don't buy Du

I travelled to Dubai for a few days and on landing I visited the du shop at Abu Dhabi international T3 Skypark 4. There was no Etisalat shop (which I have used in the past with no problem) so I went to du. After paying around AED235 for a SIM and data access for my mifi device I was able to connect. At the shop I wa requested to provide my passport and visa which I provided and copies of which were taken. 2 days later I was disconnected. On contacting du customer service, Joshua Jothi, who was of zero help and accepted that I was being punished for du's process issues, I was told the turnaround time for fixing such an issue is 24 - 48 hours!!! How can this help a visitor who is Dubai for just a few days. du is *****ing from its customers. My documents are all in order and I travel extensively around the world and several times a year to Dubai. I've never had such a problem with Etisalat so visotrs please don't waste your time and money with du. du is *****ing form its customers and will go unpunished but it's ok to punish the victim. Oppression at its best!