How to force an ISP to remove false reverse DNS

There is an IPv4 address (in a /8 managed by ARIN) that I have no control over which reverse resolves to a domain name which I registered. Someone used the IP address to run a scam, and it is resulting in negative publicity for my domain, so I would like to get the reverse resolution result changed to not point at my domain.

The reverse resolution delegation looks like this:

dig +trace ptr .153.117.74.in-addr.arpa
...
in-addr.arpa.       172800  IN  NS  e.in-addr-servers.arpa.
in-addr.arpa.       172800  IN  NS  c.in-addr-servers.arpa.
in-addr.arpa.       172800  IN  NS  b.in-addr-servers.arpa.
in-addr.arpa.       172800  IN  NS  f.in-addr-servers.arpa.
in-addr.arpa.       172800  IN  NS  d.in-addr-servers.arpa.
in-addr.arpa.       172800  IN  NS  a.in-addr-servers.arpa.
74.in-addr.arpa.    86400   IN  NS  t.arin.net.
74.in-addr.arpa.    86400   IN  NS  u.arin.net.
74.in-addr.arpa.    86400   IN  NS  r.arin.net.
74.in-addr.arpa.    86400   IN  NS  y.arin.net.
74.in-addr.arpa.    86400   IN  NS  z.arin.net.
74.in-addr.arpa.    86400   IN  NS  v.arin.net.
74.in-addr.arpa.    86400   IN  NS  w.arin.net.
74.in-addr.arpa.    86400   IN  NS  x.arin.net.
..
153.117.74.in-addr.arpa. 86400  IN  NS  NS2.SIMPLIQ.NET.
153.117.74.in-addr.arpa. 86400  IN  NS  NS1.SIMPLIQ.NET.
...
lastdigits.153.117.74.in-addr.arpa. 300 IN  PTR my domain name.
153.117.74.in-addr.arpa. 300    IN  NS  ns2.simpliq.net.
153.117.74.in-addr.arpa. 300    IN  NS  ns1.simpliq.net.

I have tried contacting the ISP that runs the final nameservers in that resolution both by e-mail using the address in the domain and IP WHOIS, and through the online chat on their website without success (I suspect they are simply ignoring me).

Is there any legitimate way to put more pressure on this ISP to change the reverse resolution for an IP that they control? For example, is there an ARIN policy that can be invoked so that the ISP risks losing their in-addr.arpa delegation for the /24 if they don't remove the wrong entry? Any other suggested approach to solving the problem?