Roaming bills can cost you a fortune if you don't shut your data off when you travel outside of the country. 

It can cost you about Dhs1 per 50 KB, if you're on du. 

So you can imagine how angry these customers were when they got charged a crazy amount even when they had their data off. 

The string of complaints started on Twitter, when @iamkatieovery raged over her Dhs200 bill, even when she "had nothing switched on."

She also clarified that she stayed in a specific area in the airport just to use their Wi-Fi; meaning there was no way her data was on the entire time. 

Another person left an angry comment on the post, saying her bills reached Dhs800 without reason. 

This time, du addressed the issue and asked the person to DM them for assistance. But to no avail, @iamkatieovery stepped into the conversation to remind du that she already tried to talk to them about the issue, but instead, the company came back to her with an old issue that she raised last July. 

Seems like a whole lot of customers faced the same problem, and the thread progressively got longer and longer with outraged comments. 

A staggering Dhs1,000 was even charged to one unlucky customer.

And one is jumping ship. 

Local sim cards for the win then next time!