Need a CRM for organising sales/leads for a SME with 4 people using and room to grow.

The main things we need are:

• Good organisation of sales and leads

• Communication between different sales peoples accounts so we know what the status is of each other's clients and prevent overlap of calling the same person twice etc.

• Easy integration with a good payment service with clients (ideally something easy like apple pay)

• Integration and linking to contracts for clients

• Cost effective and room to grow to a large scale with the software.

We are Australian based if that changes anything. Thank you in advance.