ANSWER:

No, you must follow the athan unless you are certain that he is not calling it on time as in the time of asr and fajr

QUESTION: U said that the muazzin is the guarantor for our prayer and fasting.I live in bangladesh where the muazzin of different masjid gives adhan at different timings.I asked u questions on this topic and watched ur vids also but i m not clear yet.Should i follow Umm Al Qura for all the prayers except Isha. And ISNA for Isha regardless of when the muazzin gives adhan?