Let it alone! The cables are the Lightning connector loosely verkrimmt and not soldered. If anything, then stops and invites the whole for the first time to "pull the plug". At worst, the crap does not work if and only if you are absolutely dependent on it. For me it was a multi-day business trip. No charge of the phone possible. Because you realize how dependent you are on such small things and what constitutes quality.
Who buys cheap, buys 2 times. For me it was the expensive original charger. Because as an action I will not do that to me again. So !!!
From a complaint I will refrain, because I have no desire for the next cheap replacement cable. Thus, the entrepreneurial calculus is then probably risen ?!