Wesbank unwilling to accommodate a payment plan after lockdown

Trying to make a plan with Wesbank after the effect of this lockdown, but they seem unwilling to find a way to make things work. I'm suggesting a continuation of the instalments, with an additional payment each month to knock off the arrears, but they seem to have washed there hands of this, and I'm now dealing with an external agent who's demanding the arrears paid in full or the repossession of my vehicle. I expected them to assist in finding a reasonable way to try and make it work.