Codetel keeps lacking with their service, that situation is from 2 years to present (since Slim took over). While they are the ISP with more capacity right now due to heavy investment by previous owners to the infrastructure, I think it's time to start looking for other options, maybe if you can, have a redundant system of 2 ISP's in case Codetel has their shenanigans still going on. The only problem would be cost, but for those which Internet Service and bandwidth are critical (work over the Internet, etc) I think is an idea worth thinking about.