Receiving txt message with no phone number at all (in txt body or otherwise)

For weeks I have been receiving txt messages from DHLexpress. the only number shown is 72524. Body does not have a call back number, only a link to reply to END (which I will not click on). I contacted DHL with the information, and they have no clue and can't help me stop this txt iissue . I have tried "delete and report as junk" NO help . FTC/FCC says no help without a phone number. UGH. Help is appreciated. Ive tried all the others offered in this forum with no change. Has anyone had this issue AND received a permanent solution?