Out of the blue and totally random.

"""
DIAGNOSTIC RADIOLOGY SPECIALISTS is reaching out at the number you provided regarding your medical balance. To view/pay, please click: https[:]//sms.click2pay.us/pay/10172021213442_318495. To speak with us, call (800)657-2514. Reply STOP to discontinue. Thank you.

"""

Just a random text, saying pay us.

LOL.