i2cscanner single device, multiple device addresses

i2c scanner(from examples) shows this

Scanning…
I2C device found at address 0x50
I2C device found at address 0x51
I2C device found at address 0x52
I2C device found at address 0x53
done

the device address is known to be 0x50, so is this just bad address decoding or is it really returning 4 devices?
i’m inclined to the former:-)

the data sheet says single address and im trying to write and then read back from a location; mention is made of
a ‘repeated start.

so my code
int data;
#define Trigger PB3

void setup() {
pinMode(Trigger, OUTPUT);
digitalWrite(Trigger, LOW);
Serial.begin(115200);
Wire.begin();
}

void loop() {
digitalWrite(Trigger, HIGH); // ols trigger
Wire.i2c_start();
Wire.i2c_shift_out(0x50); // device address
Wire.i2c_get_ack();
Wire.i2c_shift_out(0x5a); // writing data to this address
Wire.i2c_get_ack();
Wire.i2c_shift_out(0xa5); // write data
Wire.i2c_get_ack();
Wire.i2c_stop();
delay(5);
Wire.i2c_start();
Wire.i2c_shift_out(0x50); // device address
Wire.i2c_get_ack();
Wire.i2c_shift_out(0x5a); // writing data to this address
Wire.i2c_get_ack();
data = Wire.i2c_shift_in(); // write data
Wire.i2c_get_ack();
Wire.i2c_stop();
digitalWrite(Trigger, LOW); //
delay(5);
}