Ahhhh... okay
Let's use this info then. Looks like the address is using bits 1~7 and the Read/Write control bit is 0.
If control bit is set (=1) then Read, if bit cleared (=0) then Write

So:
%00110111 = $37 ' Read function
%00110110 = $36 ' Write function

Try that.

By the way, the device sends the ACK, or acknowledges, by holding the Data line LOW on the 9th clock cycle. The PIC will see this and continue to send data.