Have you got <span style='text-decoration: underline'>two SIMs from the same carrier "Dialog"</span> but with different numbers? <span style='text-decoration: underline'>Perhaps it actually is two identical messages, one received by SIM1 and other received by SIM2? </span>Was this a message from your carrier, it looks like a general ad promotion sent to all their subscribers possibly, and if you have two SIMs, accounts and phone numbers, that's why you received it twice. Who is your carrier, is it "Dialog"? See about unsubscribing from their marketing and promotion texts.