Calls and disconnects , similar numbers are the same , 1163 , 1169 1168 ,1170 1167, 1171 ,1125 , same thing happens

Phone does not ring but get message to say I missed a call but the caller did not leave a message.

Have had 15 of these type of calls this year from different numbers. Some are close in number to each other, so probably some sort of scammer.