Yes, they are trying to sell medicines.
I do not know where they get their lists as I have never used an on-line pharmacy.

I have seen the results of police and customs investigations of the off-shore on line pharmacies.
The active ingredient is often not present, but many contaminants are. Beware you could damage your kidneys, liver or even die if you use these.

I received a call from this person today and they did not say a word. They stayed on the phone for more than a minute in silence.

Keep getting calls from this number. No message annoying

Get calls every day they dont talk lots of noise in background [***]

Several calls from this number. I don't answer and they don't leave a message. It is not even a full phone number.