Weird number keeps calling

[Staple]

I've had 4 missed calls the last 3 days from a strange number. Unfortunately I was not able to answer any of these calls. I am with MTN. The strange thing is that all these calls came from different numbers, although the first 7 digits are all the same and only the last 3 vary.

Eg. First call 083 290 1234
Second 083 290 1432
Third 083 290 1324

Has anyone else been getting the same or know what this is?

 

[Moederloos]

probably a corporate block - someone trying to sell you **** or collect on a non-payment

 

[Staple]

Oh I forgot to add, whenever I call any of the numbers I get the voice message "The telephone number you have dialed is unavailable".

 

[Jola]

Those are outgoing lines only, they must be using a Premi-Cell, or some other least cost router.

They are trying to sell you stuff