Problem with continuity of serials

I am deeply observing some goof ups in serials these days. One like I mentioned in Naaginn, Surmaiya was Amrita's well wisher when we saw her many episodes back but when she returns she is shown as Amrita's enemy. Secondly, in Baa, Bahu aur Baby lately some episodes had Gudiya rebelling against Baa's stand on not to bring outside eatables. While I remember many episodes earlier, there was an oven brought by Harshad and his wife made bread in the Oven and Baa liked the idea.

So how come they were disappointed that they couldnt eat bhaji with pau, when they had oven to make pau at home. I was under the impression that after the oven came, the issues over not bringing bread/pau home was over.

For people like me who watch every episode with such deep interest, such things are very irritating. We spend our serial time thinking, but last time they showed this and that, then how come now they are showing that and this???

So serial makers please maintain the continuity of serials, even if it means with episodes that happened months back... because some viewers are watching very carefully every small bit of it!