Alternative to check gateway arp ping

For a mount or two ago I have a problem with my ISP.. Idi*ts in one of my ISP denied ICMP protocols inside the network..
So.. I can ping anything on the Internet but cannot ping the ISP gateway. I call them and tried to explain what is my problem with router setup and check gateway ping, but they don’t want to change the config.

So is there any alternative to check gateway ping or arp because I cannot use that WAN in my PCC configuration with 3 ISPs


tnx

ARP has nothing to do with ICMP and is not something your ISP would have turned off.