Turkcell

I don't know how this place is still in existence offering the POOR service and internet speeds that they provide. Mistakenly signed up for "high speed" internet service with this company and regretted every single day of it!
They're a part of Turkcell and supposed to be offering a "superonline" but it's furthest thing form super... or online.
Paying for 15MBs... the few times when it was actually working, I got nothing more than 6MBs... at maximum. Most times the average was less than 1MBs (see screen shot).
Their customer service is equally as bad, agents aren't too familiar with basic info and in turn no help.
If this is how all the internet service providers are in Turkey it may be best you lower your expectations so as not to be disappointed.
PS As some speedtest websites are actually blocked from within Turkey, it's a clear indication this is not an isolated issue.

As tourists we but a prepaid line from this cell phone company.
We had Greek tour, so we go to the ERGENEKON street branch
To active the international service,
then they charge us and said you all set.
The service it didn't work on Greek.
Unfortunately when we missed our tour guide we couldn't able to connected with hime,
Which is we paid for it.
After we backed we go to the branch and asked for refund but they rejected us

Avoid buying anything from them. They charged me 200 dollar for using google map for five minutes in Tbilisi. When I told them that this was UNFAIR charge, they didnt want to even hear it.

DO NOT BUY ANY OF THEIR PRODUCTS.

They treat customers as garbage, also they scam foreigners for more money. When confronted they will curse at you. I will never ever be a customer of Turkcell again and do not recommend it at all!