Furlenco — Harassment from Furlenco for payments

I ended my subscription with Furlenco on 19th March 2020
They said they couldn’t come for pickup as there was a lockdown and would do the same in a couple of days
They delayed the pickup till April and asked us to pay half the rent as they could not come for pickup
Even though i was not supposed to I made the payment using the link they shared via email
They said there won’t be any future payment requirements from my end
They delayed the pickup further till May and asked for payment again for that month and we told them several times we are not supposed to pay that
They did not even give us our security deposit back
Till date they are sending us payment reminders and calling us and misbehaving for payments even though their executives are telling us that this issue will be solved and we won’t be getting any payment reminders
I am getting harassed everyday for this issue even when they know the fault is on their end