We have never heard of such a thing, changing the Name, and pronouncing it "keil" or "Elokim". These are but a reduction in the respect of God, heaven forbid, and those who permit themselves this pronunciation lose any possible benefit, for these words indicate reduction or lack... As for the expression "Elokim", Aleph, as we know, is one of the EHV"I letters (Aleph, Heh, Vav and Yod) which are, on their own, practically silent. Many people even swallow them entirely in such a way that they say "lokim" [lacking] instead of "Elokim", and that is what may be heard by some; this is, in my humble opinion, absolutely forbidden.