Although I don't have the equipment I know what your after, the guy obviously doesn't want the work as its not a big job on its own, for similar items I used to get charged about 25/30 pounds although we used to use 303 grade as it machines a bit better.
a hand drawn sketch should be fine, don't put tight tolerances on as this will increase the price, also tell them its free issue material if you have the bar otherwise they will add the cost of a 3.2mtr length unless they have any scrap.
Use the correct terminology when talking to them ie you want one end turning down to 16mm diameter with an M16 male thread about 45mm long and the other end drilling and tapping M12 X ?? deep, sometimes it helps if they think you know what’s involved and what it may cost.
Hope this help, if you get desperate either scan/ photo your sketch and I'll speak to my old suppliers for a price.
The only awkward part is bending the angle as it requires a press break at quite high tonnage with a risk of marking the bar with the tooling, a machine shop won't have this but a fab shop would, again I may be able to help.
Are you in a hurry as this is a mod I require so could look at price for 4 rather then two but wont get chance to look at mine until Sunday.
regards,
Jamie