Rentokil accounts department offers very poor service

Worst service from the accounts department I'm a customer of Rentokil for two decades but have never experienced these issues until last year. Since 2023 they have failed to allocate payments properly. It's become my part time job to query by email, send proofs of payment, follow up, etc. They never spontaneously email or call for these queries. Staff turnover is also unacceptable. Their team leader, Chantal, has witnessed all my recent emails of complaint yet still asks me to explain what my issue is. After emailing a reply in March 2024, she ignored me for two weeks. I then phoned only to find a very arrogant person who completely ignores how horrible my client experience has been. Furthermore, she takes no accountability for ignoring my emails. I'm going to be looking for a new service provider.