The latest one that came to my phone is from (310) 694-7870 and it says:

Dear homeowner, if you are struggling to make your mortgage payment or have a recent hardship, a modification can help. Would you like to learn more about this?

A query on Google reveals that others have also received such text message.

If you received such text messages, file a complaint to FCC (http://esupport.fcc.gov/complaints.htm).

Select the options in the following sequence:

• Wireless Telephone
• Telemarketing calls (including Do-Not-Call), prerecorded messages and unsolicited commercial emails received on a wireless phone

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Information for National Do Not Call Registry – http://www.fcc.gov/cgb/donotcall/

Register your phone number in the National Do Not Call Registry – https://www.donotcall.gov/