Here are Different Scenarios to Explain How Conversations Could Appear as Glitching
Why there are incoming calls from different people all being attributed to the same number (e.g. +266696687)?
When Calls from multiple contacts are merging into a single contact/conversation, it is because the leads are calling anonymously.
Why You are Seeing Replies in Separate Conversations
If you notice that there are multiple conversations going on about the same topic, it is because your number is added to a group conversation.