Based on the provided information, it appears that the caller with the number +27100264164 is making irregular and brief calls, often lasting less than 10 seconds, which can be categorized as harassing behavior. The fact that the caller receives a "this number does not exist" recording when trying to call back suggests that the number might be spoofed or not legitimate. The caller's advice to avoid taking or returning calls from this number implies a sense of caution and suspicion. Overall, the intentions behind these calls seem unclear, but the pattern of behavior is certainly suspicious and potentially malicious.
During business hours, I receive sporadic calls lasting under ten seconds; when I returned one, assuming it was a known contact, I heard a 'number does not exist' message. I recommend ignoring and not returning calls from this line.
