Yes get them all the time just double delete and block numbers if you can. Have been getting ones from Telstra now saying I owe an account when I don't and my points are going to expire. Just delete them as usual.
Yes they are a real nuisance. I've had one everything I am expecting a parcel. I just delete them. Last one had Australia Post Van and workers with parcels.
I had one from Telstra saying my bill was due and they would take it out with direct debit every month. I had already paid and don't use direct debit. I double deleted without opening. Totally sick of all these scams