There is a video called At The Hotel - Russian From Scratch on Youtube. I was quite surprised by the pronunciation of the phrase кредитной картой. The time is 06:03. Do you really pronounce -ой endings like that? I was listening it many times but still I hear it as ы.
Also, in 00:49 the woman says на этот период instead of в этот период (as it is written in the subtitles). Are both variants correct?