Poor service and Empty promises

Did my pool with them on the 16TH August 2022 and they were quick and quite persistent to come and do my pool. Once done I paid in full and was promised that they will be back after 3 days to inspect the pool and issue a certificate for the 10 year warrantee (that will be voided if I fill my pool before the came back), I was also promised a sand change in my Filter free of charge. The paint dried and made some pretty sharp points that was supposed to be sanded down during the inspection for the 10 year warranty certificate that's supposed to be issued. Well it is now the 29th August and almost 2 weeks later, numerous promises and me trying to fit my schedule in with the empty promises and my pool is still empty and not complete! I have tried all means to get them to come and finish up, but are just being messed around. If you consider using them then don't pay the full amount till the job is 100% complete and you are satisfied that you did get what was promised!