Terrible service processes

I am here not to badmouth the business as they are very helpful however their customer service and support is extremely terrible. I work in customer environment and its very frustrating having to recieve 5 calls in a day and having to explain same scenario to every person that calls. Ideally the first person would need to make a note of the client's response and within a day if there is no change it makes sense to call again. Worst part was when I made an arrangement. Paid on the date mailed them proof of payment then 2 weeks later they still calling about the payment after multiple calls and promises to check for the payment I am still receiving calls to make payment. Service is utterly terrible and if I can I would not want to deal with this business again.