I will change my address back, what do you do about the non stop phone calls everyday? Just block the number?

I have had the PayPal account 8 months and it was after Brexit

Hi I have read other posts on this site but I just wanted clarification. I sold something over Facebook marketplace via PayPal friends and family (stupid I know). The buyer did a chargeback and now my PayPal is negative £260. it’s not a PayPal credit so no credit agreements was made and I don’t even use the PayPal account it’s very rare, I can comfortably live my life without PayPal. I have started to get phone calls and texts from moorcroft now, I know letters would be on the way so I went into my PayPal account and put in a made up address. From what I understand because it’s not PayPal credit nothing can get put onto my credit history, I don’t have to pay them anything and all moorcroft do is scaremonger for a while then pass it back to PayPal. Any information would be great. thanks