M20 Maidstone bound Slip Road, Aylesford Lane markings dangerous

The dotted lane lines recently painted to forcefully form two lanes at the start of the SLIP ROAD joining the Maidstone bound m20 (originally one lane) involved me in an extremely close collision incident. The second lane disappears after a few metres! I was behind another car when a big black jeep powered up the side of me in this outer lane and found his lane had vanished! I had to break hard and navigate slightly left to avoid him hitting me! KCC highways told me months ago that Nat highways painted the lanes without consulting them. I nearly had a serious accident through no fault of myself hence this urgent feedback! It requires signage or lines on the road making it clear the second lane ends immediately please. I wrote previously about this but you failed to understand it was the slip road I was talking about but you also said you are responsible for slip roads.