Welcome and Happy Dreading..
Welcome. How long/often did you use wax? Because of it's hydrophodic quality, it will never wash out with normal soap and water. It needs a detergent. If you only used it once or twice, it can be cleaned out in a 2-3 times a week wash for about a month. The more wax that is built up, the harder it will be to get out.
Definitely stop retwisting. That will only cause baldness over time.
A few pics would help a lot
wow 3 years of twisting and wax buildup thats rough the wax is going to be really hard to remove unless the dreadsare pretty thin but twisting thins them alot too you still got to do alot of wax removal
post close up detaild pics of the scalp plz too depending on how often they were twisted we may need to do alot more to save em and stimulate regrowth
welcome u definately need to stop retwisting and remove the wax how long have u been doing this how often?