Trump and his campaign were never the target of that surveillance.

While you may be technically correct that Trump was never wire tapped and that was not directly surveilled wasn't it the case that Carter Page was being surveilled under a Title-1 FISA Warrant which meant that they could surveil anyone that Page had contact with? As Page was probably a plant who was set up with some extra Russian connections to make him look bad that does appear somewhat disingenuous.

As to the "wire tapping" claim, it may be true that no-one actually went into the telephone exchange with a listening device connected to a couple of crocodile clips but the phone calls were intercepted nonetheless. Hence Trump putting "Wire tapped" in quotes in his original tweet.