There may have been one or more person(s) in the organization that lied to you but your experience doesn't implicate the organization as a whole. Not to mention, no one here that bashes the organization has identified a religious organization that meets their approval. The scope of many (not all) people's minds here is very narrow.
WTS deceives more than it outright lies but deception really isn't that different is it? Since you believe in the bible the Adam and Eve story shows that Satan deceived and yet is called a liar. So likewise wts deceives about it's past and takes quotes out of ccontext.
One example is when you read todays articles about 1914 and Russell. Your present understanding of 1914 is that 1914 is when Jesus returned invisibly, became reigning king, last days started and that the gentile times began. So when you read that Bible Students pointed to 1914 some 40 years prior, you assume that the 4 points mantioned above were what these BS preached. Without research you assume that BS seen the fulfillment of the prophesy that is said to have been fulfilled in 1914. And yet the reserch shows that BS preached a totally different version of dates and events with only gentile times being the only aspect of 1914 that was partially true to what their preached. So todays' wts articles totally deceive its readers about 1914 and wouldn't that be really classified as a lie.
With history same can be said about 607BC. History doesn't support it so wts tries to disprove overwhelming evidence by downplaying the evidence, taking quotes out of context and using JW "expert" sources of twisted logic that will support their bogus date. WTS will claim there is not enough artifacts found to show 586/7 to be true and yet they won't show any physical evidence to support their 607BC dogma. Astronomical evidence proves beyond a doubt the years when NB kings reigned and yet none of that evidence stops wts from keeping their bogus chronology. This type of denial of evidence, is not only applied to fall of Jerusalem but to other historical evidence.
In JW mind, the whole world is against you and everyone is under control of satan and thus any outside evidence disproving wts claims must be wrong. It's a CULT mentality that enslaves the followers from openly and freely discussing either the history or the bible on their own terms. The assumption that Jehovah is real is same as assuming that the bible is from Him. At present there is as much evidence that God (Jehovah or any other) is real as there is evidence of aliens.
Witnesses are some of the most narrow minded, uneducated, gullible folks around. So speaking of narrow minded people here, you're referring mostly to yourself and other pro-wts folks. It is wts followers who for most part cannot research facts that contradict their set of beliefs and those that are open minded and see the reality leave the cult or are stuck in the cult for fear of loosing their loved ones. Being stuck in the cult to have contact with the family members is truely sad.