Letting agents are scammers in all of this. They claim “collection of rent” as part of the management fee, what they should say is “passer on of rent from tenant to landlord should the tenant decide to honour the contract, on and by the way, if the tenant decides not to pay the rent we will do **** all about it”.
Not that I’m bitter…
BTW, if the property is managed and the tenant is not paying the rent, the agent will almost certainly continue to rack up its monthly charges, irrespective of whether or not you are receiving income. I’d have an early word about that if they are not pulling their weight.