Bussan Auto Finance India [BAF] — I am unable to renewal process - chola ms

Address: Hyderabad, Andhra Pradesh, 500084

Website: loans.bafindia.com/agreementvarification.aspx

Hi this is kv ramana. I got a message from baf for renewal of chola ms premium 950 rs and there is a link to pay online but i am unable to make the payment as that link is getting error.
Below is the provided link
https://loans.bafindia.com/agreementvarification.aspx

And after that i called to the customer care they given one number but i tried that number no one did lift the call. My last date for renewal the premium is 18th of may.
Can you please guide how to renewal the plan through online.

Please feel free to contact me about this.
Mobile number [protected]
Thanks
K v ramana