I hav an open experience with vofafone qatar, i paid twice same overdue.once am move to vaccation i cleared everything and when i back there is same amount is due on my account, after i connect with champions they says there is no paid bills almost 3months, what is that. ....i didnt understant them. ...and those who continuing with vodafone u must keep the xerox of original payment slip. ...if u dont do like next day u can see ur slip letters will erase automatically. ...so u dont hav any evidence with u for your payments so be careful. ....like this i had to pay almost 1400 extra to them.....