FDR or CIBC

Type of a scam Debt Collections

I recently moved provinces and changed phone numbers. The "FDR" and "CIBC" (if it’s even them) have been calling me multiple times every day looking for someone who is not me. If I answer there is just an automated message and if I don’t answer the automated messages go to my voicemail and fills it up! I have tried blocking their calls but somehow they get past that by changing the number they are calling from.